diff --git a/backends/sqlite/src/sqlite_query_result.cpp b/backends/sqlite/src/sqlite_query_result.cpp
index 31a1832..9ee758d 100644
--- a/backends/sqlite/src/sqlite_query_result.cpp
+++ b/backends/sqlite/src/sqlite_query_result.cpp
@@ -183,36 +183,53 @@ bool sqlite_query_result::fetch()
   return ++row_index_ < result_.size();
 }
 
+template < typename Type >
+void convert(const char *valstr, sql::any_type &value)
+{
+  Type val{};
+  read(val, valstr);
+  value = val;
+}
+
 void sqlite_query_result::read_value(const char *id, size_t index, sql::any_type &value, sql::data_type_t type, size_t size)
 {
   switch (type) {
     case sql::data_type_t::type_char:
+      convert<char>(result_[row_index_][index], value);
+      break;
     case sql::data_type_t::type_short:
+      convert<short>(result_[row_index_][index], value);
+      break;
     case sql::data_type_t::type_int:
+      convert<int>(result_[row_index_][index], value);
+      break;
     case sql::data_type_t::type_long:
-    case sql::data_type_t::type_long_long: {
-      long long val{};
-      read(val, result_[row_index_][index]);
-      value = val;
+      convert<long>(result_[row_index_][index], value);
+      break;
+    case sql::data_type_t::type_long_long:
+      convert<long long>(result_[row_index_][index], value);
       break;
-    }
     case sql::data_type_t::type_unsigned_char:
+      convert<unsigned char>(result_[row_index_][index], value);
+      break;
     case sql::data_type_t::type_unsigned_short:
+      convert<unsigned short>(result_[row_index_][index], value);
+      break;
     case sql::data_type_t::type_unsigned_int:
+      convert<unsigned int>(result_[row_index_][index], value);
+      break;
     case sql::data_type_t::type_unsigned_long:
-    case sql::data_type_t::type_unsigned_long_long: {
-      unsigned long long val{};
-      read(val, result_[row_index_][index]);
-      value = val;
+      convert<unsigned long>(result_[row_index_][index], value);
+      break;
+    case sql::data_type_t::type_unsigned_long_long:
+      convert<unsigned long long>(result_[row_index_][index], value);
       break;
-    }
     case sql::data_type_t::type_float:
-    case sql::data_type_t::type_double: {
-      double val{};
-      read(val, result_[row_index_][index]);
-      value = val;
+      convert<float>(result_[row_index_][index], value);
+      break;
+    case sql::data_type_t::type_double:
+      convert<double>(result_[row_index_][index], value);
       break;
-    }
     case sql::data_type_t::type_bool: {
       int val{};
       read(val, result_[row_index_][index]);
diff --git a/include/matador/sql/any_type.hpp b/include/matador/sql/any_type.hpp
index 9999598..2bf6a83 100644
--- a/include/matador/sql/any_type.hpp
+++ b/include/matador/sql/any_type.hpp
@@ -9,8 +9,8 @@ namespace matador::sql {
 using any_type = std::variant<
   char, short, int, long, long long,
   unsigned char, unsigned short, unsigned int, unsigned long, unsigned long long,
-  bool,
   float, double,
+  bool,
   const char*,
   std::string,
   nullptr_t>;
diff --git a/include/matador/sql/column.hpp b/include/matador/sql/column.hpp
index abe15fb..2906cec 100644
--- a/include/matador/sql/column.hpp
+++ b/include/matador/sql/column.hpp
@@ -6,7 +6,8 @@
 
 #include "matador/utils/field_attributes.hpp"
 
-#include <any>
+#include <optional>
+#include <vector>
 
 namespace matador::sql {
 
@@ -37,6 +38,17 @@ public:
   [[nodiscard]] const std::string& ref_table() const;
   [[nodiscard]] const std::string& ref_column() const;
 
+  template< typename Type >
+  [[nodiscard]] bool is_type_of() const {
+    return std::holds_alternative<Type>(value_);
+  }
+
+  template< typename Type >
+  std::optional<Type> value() const {
+    const Type* ptr= std::get_if<Type>(&value_);
+    return ptr ? std::make_optional<Type>(*ptr) : std::nullopt;
+  }
+
 private:
   template<class Operator>
   void process(Operator &op)
@@ -44,9 +56,13 @@ private:
     op.on_attribute(name_.c_str(), value_, type_, attributes_);
   }
 
+  using data_type_index = std::vector<data_type_t>;
+
 private:
   friend class record;
 
+  static const data_type_index data_type_index_;
+
   std::string name_;
   utils::field_attributes attributes_;
   data_type_t type_{};
diff --git a/include/matador/sql/column_generator.hpp b/include/matador/sql/column_generator.hpp
index 890e335..888af3d 100644
--- a/include/matador/sql/column_generator.hpp
+++ b/include/matador/sql/column_generator.hpp
@@ -2,6 +2,7 @@
 #define QUERY_COLUMN_GENERATOR_HPP
 
 #include "matador/sql/column.hpp"
+#include "matador/sql/table_repository.hpp"
 #include "matador/sql/types.hpp"
 
 #include "matador/utils/access.hpp"
@@ -18,10 +19,10 @@ public:
   fk_column_generator() = default;
 
   template<class Type>
-  column generate(const char *id, Type &x)
+  column generate(const char *id, Type &x, const std::string &ref_table, const std::string &ref_column)
   {
     utils::access::process(*this, x);
-    return column{id, type_, { utils::constraints::FOREIGN_KEY }};
+    return column{id, type_, ref_table, ref_column, { utils::constraints::FOREIGN_KEY }};
   }
 
   template<typename ValueType>
@@ -50,16 +51,16 @@ private:
 class column_generator
 {
 private:
-  explicit column_generator(std::vector<column> &columns);
+  column_generator(std::vector<column> &columns, const table_repository &repo);
 
 public:
   ~column_generator() = default;
 
   template < class Type >
-  static std::vector<column> generate()
+  static std::vector<column> generate(const table_repository &repo)
   {
     std::vector<column> columns;
-    column_generator gen(columns);
+    column_generator gen(columns, repo);
     Type obj;
     matador::utils::access::process(gen, obj);
     return std::move(columns);
@@ -76,21 +77,27 @@ public:
   template<class Pointer>
   void on_belongs_to(const char *id, Pointer &x, utils::cascade_type)
   {
-    columns_.push_back(fk_column_generator_.generate(id, *x));
+    const auto [ref_table, ref_column] = determine_foreign_ref(std::type_index(typeid(typename Pointer::value_type)));
+    columns_.push_back(fk_column_generator_.generate(id, *x, ref_table, ref_column));
   }
   template<class Pointer>
   void on_has_one(const char *id, Pointer &x, utils::cascade_type)
   {
-    columns_.push_back(fk_column_generator_.generate(id, *x));
+    const auto [ref_table, ref_column] = determine_foreign_ref(std::type_index(typeid(typename Pointer::value_type)));
+    columns_.push_back(fk_column_generator_.generate(id, *x, ref_table, ref_column));
   }
   template<class ContainerType>
   void on_has_many(const char *, ContainerType &, const char *, const char *, utils::cascade_type) {}
   template<class ContainerType>
   void on_has_many(const char *, ContainerType &, utils::cascade_type) {}
 
+private:
+  std::pair<std::string, std::string> determine_foreign_ref(const std::type_index &ti);
+
 private:
   size_t index_ = 0;
   std::vector<column> &columns_;
+  const table_repository &repo_;
 
   fk_column_generator fk_column_generator_;
 };
diff --git a/include/matador/sql/foreign.hpp b/include/matador/sql/foreign.hpp
index f8700b4..0fa92bc 100644
--- a/include/matador/sql/foreign.hpp
+++ b/include/matador/sql/foreign.hpp
@@ -9,18 +9,22 @@ template < class Type >
 class foreign
 {
 public:
+  using value_type = Type;
+  using pointer = value_type*;
+  using reference = value_type&;
+
   foreign() = default;
   explicit foreign(Type *obj)
   : obj_(obj) {}
 
-  Type* operator->() { return obj_.get(); }
-  const Type* operator->() const { return obj_.get(); }
+  pointer operator->() { return obj_.get(); }
+  const value_type* operator->() const { return obj_.get(); }
 
-  Type& operator*() { return *obj_; }
-  const Type& operator*() const { return *obj_; }
+  reference operator*() { return *obj_; }
+  const value_type& operator*() const { return *obj_; }
 
 private:
-  std::unique_ptr<Type> obj_;
+  std::unique_ptr<value_type> obj_;
 };
 
 template<class Type, typename... Args>
diff --git a/include/matador/sql/query_builder.hpp b/include/matador/sql/query_builder.hpp
index 1935413..c5fed9d 100644
--- a/include/matador/sql/query_builder.hpp
+++ b/include/matador/sql/query_builder.hpp
@@ -11,7 +11,6 @@
 #include <unordered_set>
 #include <vector>
 
-
 namespace matador::sql {
 
 class dialect;
@@ -97,6 +96,7 @@ public:
   query_builder& create();
   query_builder& drop();
   query_builder& select(std::initializer_list<std::string> column_names);
+  query_builder& select(const std::vector<std::string> &column_names);
   query_builder& insert();
   query_builder& update(const std::string &table);
   query_builder& remove();
diff --git a/include/matador/sql/query_intermediates.hpp b/include/matador/sql/query_intermediates.hpp
index 01227f5..0b3c3d5 100644
--- a/include/matador/sql/query_intermediates.hpp
+++ b/include/matador/sql/query_intermediates.hpp
@@ -9,6 +9,7 @@
 #include "matador/sql/query_builder.hpp"
 #include "matador/sql/query_result.hpp"
 #include "matador/sql/record.hpp"
+#include "matador/sql/table_repository.hpp"
 #include "matador/sql/value_extractor.hpp"
 
 #include <string>
@@ -142,14 +143,18 @@ public:
 class query_create_intermediate : query_intermediate
 {
 public:
-  using query_intermediate::query_intermediate;
+  query_create_intermediate(session &db, query_builder &query, table_repository &repo);
 
   query_execute_finish table(const std::string &table, std::initializer_list<column> columns);
   template<class Type>
-  query_execute_finish table(const std::string &table)
+  query_execute_finish table(const std::string &table_name)
   {
-    return {db(), query().table(table, column_generator::generate<Type>())};
+    const auto &info = repository_.attach<Type>(table_name, record{column_generator::generate<Type>(repository_)});
+    return {db(), query().table(table_name, info.prototype.columns())};
   }
+
+private:
+  table_repository &repository_;
 };
 
 class query_drop_intermediate : query_intermediate
diff --git a/include/matador/sql/record.hpp b/include/matador/sql/record.hpp
index 881683a..60bbbeb 100644
--- a/include/matador/sql/record.hpp
+++ b/include/matador/sql/record.hpp
@@ -23,6 +23,7 @@ public:
 
   record() = default;
   record(std::initializer_list<column> columns);
+  explicit record(const std::vector<column> &columns);
   record(const record&) = default;
   record& operator=(const record&) = default;
   record(record&&) noexcept = default;
@@ -44,8 +45,13 @@ public:
 
   void append(column col);
 
+  bool has_primary_key() const;
+  const column& primary_key() const;
+
+  [[nodiscard]] const std::vector<column>& columns() const;
+
   [[nodiscard]] const column& at(const std::string &name) const;
-  const column& at(size_t index) const;
+  [[nodiscard]] const column& at(size_t index) const;
 
   iterator find(const std::string &column_name);
   [[nodiscard]] const_iterator find(const std::string &column_name) const;
@@ -62,9 +68,15 @@ public:
   [[nodiscard]] bool empty() const;
   void clear();
 
+private:
+  void init();
+  void add_to_map(column &col, size_t index);
+
 private:
   column_by_index columns_;
   column_by_name_map columns_by_name_;
+
+  int pk_index_{-1};
 };
 
 }
diff --git a/include/matador/sql/session.hpp b/include/matador/sql/session.hpp
index 0e36add..b82b3e1 100644
--- a/include/matador/sql/session.hpp
+++ b/include/matador/sql/session.hpp
@@ -1,10 +1,14 @@
 #ifndef QUERY_SESSION_HPP
 #define QUERY_SESSION_HPP
 
+#include "matador/sql/column_name_generator.hpp"
 #include "matador/sql/connection.hpp"
 #include "matador/sql/connection_pool.hpp"
 #include "matador/sql/query_builder.hpp"
 #include "matador/sql/query_intermediates.hpp"
+#include "matador/sql/table_repository.hpp"
+
+#include <unordered_map>
 
 namespace matador::sql {
 
@@ -15,6 +19,11 @@ public:
 
   query_create_intermediate create();
   query_drop_intermediate drop();
+  template < class Type >
+  query_select_intermediate select()
+  {
+    return query_select_intermediate{*this, query_.select(column_name_generator::generate<Type>())};
+  }
   query_select_intermediate select(std::initializer_list<std::string> column_names);
   query_insert_intermediate insert();
   query_update_intermediate update(const std::string &table);
@@ -23,9 +32,19 @@ public:
   query_result<record> fetch(const std::string &sql);
   std::pair<size_t, std::string> execute(const std::string &sql);
 
+  template<typename Type>
+  void attach(const std::string &table_name)
+  {
+    table_repository_.attach<Type>(table_name);
+  }
+
+  [[nodiscard]] const table_repository& tables() const;
+
 private:
   connection_pool<connection> &pool_;
   query_builder query_;
+
+  table_repository table_repository_;
 };
 
 }
diff --git a/include/matador/sql/table_repository.hpp b/include/matador/sql/table_repository.hpp
new file mode 100644
index 0000000..5bff18d
--- /dev/null
+++ b/include/matador/sql/table_repository.hpp
@@ -0,0 +1,55 @@
+#ifndef QUERY_TABLE_REPOSITORY_HPP
+#define QUERY_TABLE_REPOSITORY_HPP
+
+#include "matador/sql/record.hpp"
+
+#include <optional>
+#include <string>
+#include <typeindex>
+#include <unordered_map>
+
+namespace matador::sql {
+
+struct table_info
+{
+  std::string name;
+  record prototype;
+};
+
+class table_repository
+{
+public:
+  template<typename Type>
+  const table_info& attach(const std::string &table_name, const record &proto)
+  {
+    return attach(std::type_index(typeid(Type)), table_name, proto);
+  }
+
+  const table_info& attach(std::type_index ti, const std::string &table_name, const record &proto);
+  const table_info& attach(std::type_index ti, const table_info& table);
+
+  template<typename Type>
+  std::optional<table_info> info()
+  {
+    return info(std::type_index(typeid(Type)));
+  }
+
+  std::optional<table_info> info(std::type_index ti);
+
+  template<typename Type>
+  [[nodiscard]] std::pair<std::string, std::string> reference() const
+  {
+    return reference(std::type_index(typeid(Type)));
+  }
+
+  [[nodiscard]] std::pair<std::string, std::string> reference(const std::type_index &ti) const;
+
+private:
+  using repository = std::unordered_map<std::type_index, table_info>;
+  repository repository_;
+};
+;
+
+}
+
+#endif //QUERY_TABLE_REPOSITORY_HPP
diff --git a/include/matador/utils/constraints.hpp b/include/matador/utils/constraints.hpp
index 95c5327..c518ef9 100644
--- a/include/matador/utils/constraints.hpp
+++ b/include/matador/utils/constraints.hpp
@@ -4,13 +4,14 @@
 namespace matador::utils {
 
 enum class constraints : unsigned char {
-  NONE =        0,
-  NOT_NULL =    1 << 0,
-  INDEX =       1 << 1,
-  UNIQUE =      1 << 2,
-  PRIMARY_KEY = 1 << 3,
-  FOREIGN_KEY = 1 << 4,
-  DEFAULT =     1 << 5,
+  NONE =           0,
+  NOT_NULL =       1 << 0,
+  INDEX =          1 << 1,
+  UNIQUE =         1 << 2,
+  PRIMARY_KEY =    1 << 3,
+  FOREIGN_KEY =    1 << 4,
+  DEFAULT =        1 << 5,
+  AUTO_INCREMENT = 1 << 6,
   UNIQUE_NOT_NULL = UNIQUE | NOT_NULL
 };
 
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 2f9a399..ba8f6fd 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -15,7 +15,8 @@ set(SQL_SOURCES
   sql/column_generator.cpp
   sql/column_name_generator.cpp
   sql/key_value_generator.cpp
-  sql/fk_value_extractor.cpp)
+  sql/fk_value_extractor.cpp
+  sql/table_repository.cpp)
 
 set(SQL_HEADER
   ../include/matador/sql/dialect.hpp
@@ -42,7 +43,8 @@ set(SQL_HEADER
   ../include/matador/sql/any_type.hpp
   ../include/matador/sql/key_value_generator.hpp
   ../include/matador/sql/foreign.hpp
-  ../include/matador/sql/fk_value_extractor.hpp)
+  ../include/matador/sql/fk_value_extractor.hpp
+  "../include/matador/sql/table_repository.hpp")
 
 set(UTILS_HEADER
   ../include/matador/utils/field_attributes.hpp
diff --git a/src/sql/column.cpp b/src/sql/column.cpp
index 574ae3d..6e59d77 100644
--- a/src/sql/column.cpp
+++ b/src/sql/column.cpp
@@ -3,6 +3,27 @@
 #include "matador/sql/column.hpp"
 
 namespace matador::sql {
+
+const column::data_type_index column::data_type_index_ {
+  data_type_t::type_char,
+  data_type_t::type_short,
+  data_type_t::type_int,
+  data_type_t::type_long,
+  data_type_t::type_long_long,
+  data_type_t::type_unsigned_char,
+  data_type_t::type_unsigned_short,
+  data_type_t::type_unsigned_int,
+  data_type_t::type_unsigned_long,
+  data_type_t::type_unsigned_long_long,
+  data_type_t::type_float,
+  data_type_t::type_double,
+  data_type_t::type_bool,
+  data_type_t::type_char_pointer,
+  data_type_t::type_varchar,
+  data_type_t::type_text,
+  data_type_t::type_null,
+};
+
 column::column(std::string name, data_type_t type, utils::field_attributes attr)
 : name_(std::move(name))
 , type_(type)
diff --git a/src/sql/column_generator.cpp b/src/sql/column_generator.cpp
index 8f1b36e..3846408 100644
--- a/src/sql/column_generator.cpp
+++ b/src/sql/column_generator.cpp
@@ -2,8 +2,10 @@
 
 namespace matador::sql {
 
-column_generator::column_generator(std::vector<column> &columns)
-: columns_(columns) {}
+column_generator::column_generator(std::vector<column> &columns, const table_repository &repo)
+: columns_(columns)
+, repo_(repo)
+{}
 
 void column_generator::on_primary_key(const char *id, std::string &pk, size_t size)
 {
@@ -15,6 +17,11 @@ void column_generator::on_revision(const char *id, unsigned long long int &x)
   on_attribute(id, x);
 }
 
+std::pair<std::string, std::string> column_generator::determine_foreign_ref(const std::type_index &ti)
+{
+  return repo_.reference(ti);
+}
+
 void fk_column_generator::on_primary_key(const char *, std::string &, size_t size)
 {
   type_ = data_type_traits<std::string>::builtin_type(size);
diff --git a/src/sql/query_builder.cpp b/src/sql/query_builder.cpp
index 1619ddd..8b2dd9e 100644
--- a/src/sql/query_builder.cpp
+++ b/src/sql/query_builder.cpp
@@ -98,6 +98,11 @@ query_builder& query_builder::drop() {
 }
 
 query_builder& query_builder::select(std::initializer_list<std::string> column_names)
+{
+  return select(std::vector<std::string>{column_names});
+}
+
+query_builder& query_builder::select(const std::vector<std::string> &column_names)
 {
   initialize(command_t::SELECT, state_t::QUERY_SELECT);
 
diff --git a/src/sql/query_intermediates.cpp b/src/sql/query_intermediates.cpp
index b96c38d..847c27f 100644
--- a/src/sql/query_intermediates.cpp
+++ b/src/sql/query_intermediates.cpp
@@ -100,6 +100,10 @@ query_execute_finish query_into_intermediate::values(std::initializer_list<any_t
   return {db(), query().values(values)};
 }
 
+query_create_intermediate::query_create_intermediate(session &db, query_builder &query, table_repository &repo)
+: query_intermediate(db, query)
+, repository_(repo) {}
+
 query_execute_finish query_create_intermediate::table(const std::string &table, std::initializer_list<column> columns)
 {
   return {db(), query().table(table, columns)};
diff --git a/src/sql/record.cpp b/src/sql/record.cpp
index c05a133..c023cce 100644
--- a/src/sql/record.cpp
+++ b/src/sql/record.cpp
@@ -1,13 +1,38 @@
 #include "matador/sql/record.hpp"
 
+#include <stdexcept>
+
 namespace matador::sql {
 
 record::record(std::initializer_list<column> columns)
-: columns_(columns) {
-  size_t index{0};
-  for(auto &col : columns_) {
-    columns_by_name_.emplace(col.name(), column_index_pair {std::ref(col), index++});
+: columns_(columns)
+{
+  init();
+}
+
+record::record(const std::vector<column> &columns)
+: columns_(columns)
+{
+  init();
+}
+
+bool record::has_primary_key() const
+{
+  return pk_index_ > -1;
+}
+
+const column &record::primary_key() const
+{
+  if (!has_primary_key()) {
+    throw std::logic_error("record has no primary key");
   }
+
+  return columns_[pk_index_];
+}
+
+const std::vector<column> &record::columns() const
+{
+  return columns_;
 }
 
 const column &record::at(const std::string &name) const
@@ -34,7 +59,7 @@ record::const_iterator record::find(const std::string &column_name) const {
 void record::append(column col)
 {
   auto &ref = columns_.emplace_back(std::move(col));
-  columns_by_name_.emplace(ref.name(), column_index_pair{std::ref(ref), columns_.size()-1});
+  add_to_map(ref, columns_.size()-1);
 }
 
 record::iterator record::begin()
@@ -83,4 +108,21 @@ void record::clear()
   columns_by_name_.clear();
 }
 
+void record::init()
+{
+  size_t index{0};
+  for(auto &col : columns_) {
+    add_to_map(col, index++);
+//    columns_by_name_.emplace(col.name(), column_index_pair {std::ref(col), index++});
+  }
+}
+
+void record::add_to_map(column &col, size_t index)
+{
+  columns_by_name_.emplace(col.name(), column_index_pair {std::ref(col), index});
+  if (utils::is_constraint_set(col.attributes().options(), utils::constraints::PRIMARY_KEY)) {
+    pk_index_ = static_cast<int>(index);
+  }
+}
+
 }
diff --git a/src/sql/session.cpp b/src/sql/session.cpp
index 97221c0..caf8b8a 100644
--- a/src/sql/session.cpp
+++ b/src/sql/session.cpp
@@ -12,7 +12,7 @@ session::session(connection_pool<connection> &pool)
 
 query_create_intermediate session::create()
 {
-  return query_create_intermediate{*this, query_.create()};
+  return query_create_intermediate{*this, query_.create(), table_repository_};
 }
 
 query_drop_intermediate session::drop()
@@ -55,4 +55,9 @@ std::pair<size_t, std::string> session::execute(const std::string &sql) {
   }
   return c->execute(sql);
 }
+
+const table_repository& session::tables() const
+{
+  return table_repository_;
+}
 }
\ No newline at end of file
diff --git a/src/sql/table_repository.cpp b/src/sql/table_repository.cpp
new file mode 100644
index 0000000..b6697e1
--- /dev/null
+++ b/src/sql/table_repository.cpp
@@ -0,0 +1,39 @@
+#include "matador/sql/table_repository.hpp"
+
+#include <stdexcept>
+
+namespace matador::sql {
+
+const table_info &table_repository::attach(std::type_index ti, const std::string &table_name, const record &proto)
+{
+  return attach(ti, table_info{table_name, proto});
+}
+
+const table_info& table_repository::attach(const std::type_index ti, const table_info& table)
+{
+  return repository_.try_emplace(ti, table).first->second;
+}
+
+std::optional<table_info> table_repository::info(std::type_index ti)
+{
+  const auto it = repository_.find(ti);
+  if (it == repository_.end()) {
+    return std::nullopt;
+  }
+  return it->second;
+}
+
+std::pair<std::string, std::string> table_repository::reference(const std::type_index &ti) const
+{
+  const auto it = repository_.find(ti);
+  if (it != repository_.end()) {
+    if (!it->second.prototype.has_primary_key()) {
+      throw std::logic_error("table doesn't has primary key");
+    }
+    return { it->second.name, it->second.prototype.primary_key().name() };
+  }
+
+  return {};
+}
+
+}
\ No newline at end of file
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 026c6a3..33c64cb 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -20,7 +20,10 @@ add_executable(tests builder.cpp
   column_name_generator.cpp
   value_generator.cpp
   models/category.hpp
-  models/supplier.hpp)
+  models/supplier.hpp
+  models/airplane.hpp
+  models/flight.hpp
+  models/person.hpp)
 target_link_libraries(tests PRIVATE
   Catch2::Catch2WithMain
   matador
diff --git a/test/column_generator.cpp b/test/column_generator.cpp
index 766368d..f8ec55b 100644
--- a/test/column_generator.cpp
+++ b/test/column_generator.cpp
@@ -1,14 +1,16 @@
 #include <catch2/catch_test_macros.hpp>
 
 #include "matador/sql/column_generator.hpp"
+#include "matador/sql/table_repository.hpp"
 
 #include "models/product.hpp"
 
 using namespace matador::sql;
 
 TEST_CASE("Generate columns from object", "[column generator]") {
+  table_repository repo;
 
-  auto columns = column_generator::generate<matador::test::product>();
+  auto columns = column_generator::generate<matador::test::product>(repo);
 
   const std::vector<std::string> expected_columns = {
     "product_name",
diff --git a/test/models/airplane.hpp b/test/models/airplane.hpp
new file mode 100644
index 0000000..fe7adef
--- /dev/null
+++ b/test/models/airplane.hpp
@@ -0,0 +1,35 @@
+#ifndef QUERY_AIRPLANE_HPP
+#define QUERY_AIRPLANE_HPP
+
+#include "category.hpp"
+#include "supplier.hpp"
+
+#include "matador/utils/access.hpp"
+#include "matador/utils/cascade_type.hpp"
+#include "matador/utils/field_attributes.hpp"
+
+#include "matador/sql/foreign.hpp"
+
+#include <string>
+
+namespace matador::test {
+
+struct airplane
+{
+  unsigned long id;
+  std::string brand;
+  std::string model;
+
+  template<class Operator>
+  void process(Operator &op) {
+    namespace field = matador::utils::access;
+    using namespace matador::utils;
+    field::primary_key(op, "id", id);
+    field::attribute(op, "brand", brand, 255);
+    field::attribute(op, "model", model, 255);
+  }
+};
+
+}
+
+#endif //QUERY_AIRPLANE_HPP
diff --git a/test/models/flight.hpp b/test/models/flight.hpp
new file mode 100644
index 0000000..3283c1f
--- /dev/null
+++ b/test/models/flight.hpp
@@ -0,0 +1,33 @@
+#ifndef QUERY_FLIGHT_HPP
+#define QUERY_FLIGHT_HPP
+
+#include "airplane.hpp"
+
+#include "matador/utils/access.hpp"
+#include "matador/utils/cascade_type.hpp"
+#include "matador/utils/field_attributes.hpp"
+
+#include "matador/sql/foreign.hpp"
+
+#include <string>
+
+namespace matador::test {
+
+struct flight {
+  unsigned long id;
+  sql::foreign<test::airplane> airplane;
+  std::string pilot_name;
+
+  template<class Operator>
+  void process(Operator &op) {
+    namespace field = matador::utils::access;
+    using namespace matador::utils;
+    field::primary_key(op, "id", id);
+    field::has_one(op, "airplane_id", airplane, utils::cascade_type::ALL);
+    field::attribute(op, "pilot_name", pilot_name, 255);
+  }
+};
+
+}
+
+#endif //QUERY_FLIGHT_HPP
diff --git a/test/models/person.hpp b/test/models/person.hpp
new file mode 100644
index 0000000..613cb68
--- /dev/null
+++ b/test/models/person.hpp
@@ -0,0 +1,28 @@
+#ifndef QUERY_PERSON_HPP
+#define QUERY_PERSON_HPP
+
+#include "matador/utils/access.hpp"
+#include "matador/utils/field_attributes.hpp"
+
+#include <string>
+
+namespace matador::test {
+
+struct person
+{
+  unsigned long id{};
+  std::string name;
+  unsigned int age{};
+
+  template<class Operator>
+  void process(Operator &op) {
+    namespace field = matador::utils::access;
+    using namespace matador::utils;
+    field::primary_key(op, "id", id);
+    field::attribute(op, "name", name, 255);
+    field::attribute(op, "age", age);
+  }
+};
+
+}
+#endif //QUERY_PERSON_HPP
diff --git a/test/session.cpp b/test/session.cpp
index e8faea4..76204b6 100644
--- a/test/session.cpp
+++ b/test/session.cpp
@@ -5,11 +5,14 @@
 #include <matador/sql/session.hpp>
 
 #include "models/product.hpp"
+#include "models/airplane.hpp"
+#include "models/flight.hpp"
+#include "models/person.hpp"
 
 using namespace matador::sql;
 using namespace matador::test;
 
-TEST_CASE("Execute create and drop table statement", "[session]") {
+TEST_CASE("Create and drop table statement", "[session]") {
   connection_pool<connection> pool("sqlite://sqlite.db", 4);
   session s(pool);
 
@@ -27,13 +30,20 @@ TEST_CASE("Execute create and drop table statement", "[session]") {
   REQUIRE(res.second == R"(DROP TABLE "person")");
 }
 
-TEST_CASE("Execute create table statement with foreign keys", "[session]") {
-  //  res = s.create().table<product>("product").execute();
+TEST_CASE("Create table with foreign key relation", "[session]") {
+  connection_pool<connection> pool("sqlite://sqlite.db", 4);
+  session s(pool);
 
-  //  REQUIRE(res.second == R"(CREATE TABLE "product" ("product_name" VARCHAR(255) PRIMARY KEY, "supplier_id" BIGINT NOT NULL FOREIGN KEY, "category_id" BIGINT NOT NULL FOREIGN KEY, "quantity_per_unit" VARCHAR(255), "unit_price" BIGINT, "units_in_stock" BIGINT, "units_in_order" BIGINT, "reorder_level" BIGINT, "discontinued" BOOLEAN))");
+  auto res = s.create().table<airplane>("airplane").execute();
+  REQUIRE(res.first == 0);
+  REQUIRE(res.second == R"(CREATE TABLE "airplane" ("id" BIGINT, "brand" VARCHAR(255), "model" VARCHAR(255), CONSTRAINT PK_airplane PRIMARY KEY (id)))");
 
-  //  res = s.drop().table("person").execute();
-  //  REQUIRE(res.first == 1);
+  res = s.create().table<flight>("flight").execute();
+  REQUIRE(res.first == 0);
+  REQUIRE(res.second == R"(CREATE TABLE "flight" ("id" BIGINT, "airplane_id" BIGINT, "pilot_name" VARCHAR(255), CONSTRAINT PK_flight PRIMARY KEY (id), CONSTRAINT FK_flight_airplane_id FOREIGN KEY (airplane_id) REFERENCES airplane(id)))");
+
+  s.drop().table("flight").execute();
+  s.drop().table("airplane").execute();
 }
 
 TEST_CASE("Execute insert record statement", "[session]") {
@@ -69,149 +79,216 @@ TEST_CASE("Execute insert record statement", "[session]") {
     REQUIRE(i.size() == 3);
     REQUIRE(i.at(0).name() == "id");
     REQUIRE(i.at(0).type() == data_type_t::type_long_long);
+    REQUIRE(i.at(0).value<long long>() == 7);
     REQUIRE(i.at(1).name() == "name");
     REQUIRE(i.at(1).type() == data_type_t::type_varchar);
+    REQUIRE(i.at(1).value<std::string>() == "george");
     REQUIRE(i.at(2).name() == "age");
     REQUIRE(i.at(2).type() == matador::sql::data_type_t::type_int);
+    REQUIRE(i.at(2).value<int>() == 45);
   }
-  s.drop().table("person").execute();
 
-  // using namespace matador::test;
-  // product p;
-  // p.discontinued = false;
-  // p.reorder_level = 1;
-  // p.units_in_order = 2;
-  // p.units_in_stock = 100;
-  // p.unit_price = 49;
-  // p.quantity_per_unit = "pcs";
-  // p.category = make_foreign<matador::test::category>();
-  // p.category->id = 7;
-  // p.supplier = make_foreign<matador::test::supplier>();;
-  // p.supplier->id = 13;
-  // p.product_name = "candle";
-  //
-  // res = s.insert().into<product>("product").values(p).execute();
-  //
-  // REQUIRE(res.second == R"(INSERT INTO "product" ("product_name", "supplier_id", "category_id", "quantity_per_unit", "unit_price", "units_in_stock", "units_in_order", "reorder_level", "discontinued") VALUES ('candle', 13, 7, 'pcs', 49, 100, 2, 1, 0))");
-  //
-  // res = s.insert().into("product", p).execute();
-  //
-  // REQUIRE(res.second == R"(INSERT INTO "product" ("product_name", "supplier_id", "category_id", "quantity_per_unit", "unit_price", "units_in_stock", "units_in_order", "reorder_level", "discontinued") VALUES ('candle', 13, 7, 'pcs', 49, 100, 2, 1, 0))");
+  s.drop().table("person").execute();
+}
+
+TEST_CASE("Execute update record statement", "[session]") {
+  connection_pool<connection> pool("sqlite://sqlite.db", 4);
+  session s(pool);
+
+  auto res = s
+    .create()
+    .table("person", {
+      make_pk_column<unsigned long>("id"),
+      make_column<std::string>("name", 255),
+      make_column<unsigned short>("age")
+    })
+    .execute();
+
+  REQUIRE(res.first == 0);
+
+  res = s
+    .insert()
+    .into("person", {"id", "name", "age"})
+    .values({7, "george", 45})
+    .execute();
+
+  REQUIRE(res.first == 1);
+  REQUIRE(res.second == R"(INSERT INTO "person" ("id", "name", "age") VALUES (7, 'george', 45))");
+
+  res = s.update("person")
+         .set({{"id", 7}, {"name", "jane"}, {"age", 35}})
+         .where("id"_col == 7)
+         .execute();
+
+  REQUIRE(res.first == 1);
+  REQUIRE(res.second == R"(UPDATE "person" SET "id"=7, "name"='jane', "age"=35 WHERE "id" = 7)");
+
+  auto result = s
+    .select({"id", "name", "age"})
+    .from("person")
+    .fetch_all();
+
+  for (const auto& i : result) {
+    REQUIRE(i.size() == 3);
+    REQUIRE(i.at(0).name() == "id");
+    REQUIRE(i.at(0).type() == data_type_t::type_long_long);
+    REQUIRE(i.at(0).value<long long>() == 7);
+    REQUIRE(i.at(1).name() == "name");
+    REQUIRE(i.at(1).type() == data_type_t::type_varchar);
+    REQUIRE(i.at(1).value<std::string>() == "jane");
+    REQUIRE(i.at(2).name() == "age");
+    REQUIRE(i.at(2).type() == matador::sql::data_type_t::type_int);
+    REQUIRE(i.at(2).value<int>() == 35);
+  }
+
+  s.drop().table("person").execute();
 }
 
 TEST_CASE("Execute select statement with where clause", "[session]") {
   connection_pool<connection> pool("sqlite://sqlite.db", 4);
   session s(pool);
 
-  auto res = s.select({"id", "name", "color"})
-              .from("person")
-              .where("id"_col == 8)
-              .fetch_all();
+  auto res = s.create()
+              .table<person>("person")
+              .execute();
+
+  REQUIRE(res.first == 0);
+
+  person george{7, "george", 45};
+
+  res = s.insert()
+         .into("person", george)
+         .execute();
+  REQUIRE(res.first == 1);
+
+  auto result = s.select<person>()
+                 .from("person")
+                 .where("id"_col == 7)
+                 .fetch_all();
+
+  for (const auto& i : result) {
+    REQUIRE(i.size() == 3);
+    REQUIRE(i.at(0).name() == "id");
+    REQUIRE(i.at(0).type() == data_type_t::type_long_long);
+    REQUIRE(i.at(0).value<long long>() == george.id);
+    REQUIRE(i.at(1).name() == "name");
+    REQUIRE(i.at(1).type() == data_type_t::type_varchar);
+    REQUIRE(i.at(1).value<std::string>() == george.name);
+    REQUIRE(i.at(2).name() == "age");
+    REQUIRE(i.at(2).type() == matador::sql::data_type_t::type_long_long);
+    REQUIRE(i.at(2).value<long long>() == george.age);
+  }
 
-  // Todo: prepare test data
-  REQUIRE(true);
 //  REQUIRE(res.str() == R"(SELECT "id", "name", "color" FROM "person" WHERE "id" = 8)");
+
+  s.drop().table("person").execute();
+
 }
 
 TEST_CASE("Execute select statement with order by", "[session]") {
   connection_pool<connection> pool("sqlite://sqlite.db", 4);
   session s(pool);
 
-  auto res = s.select({"id", "name", "color"})
-              .from("person")
-              .where("id"_col == 8)
-              .order_by("name").desc()
-              .fetch_all();
+  auto res = s
+    .create()
+    .table("person", {
+      make_pk_column<unsigned long>("id"),
+      make_column<std::string>("name", 255),
+      make_column<std::string>("color", 63)
+    })
+    .execute();
+
+  REQUIRE(res.first == 0);
+
+  auto result = s.select({"id", "name", "color"})
+                 .from("person")
+                 .where("id"_col == 8)
+                 .order_by("name").desc()
+                 .fetch_all();
 
   // Todo: prepare test data
-  REQUIRE(true);
-//  REQUIRE(res.str() == R"(SELECT "id", "name", "color" FROM "person" WHERE "id" = 8 ORDER BY "name" DESC)");
+
+  s.drop().table("person").execute();
 }
 
 TEST_CASE("Execute select statement with group by and order by", "[session]") {
   connection_pool<connection> pool("sqlite://sqlite.db", 4);
   session s(pool);
 
-  auto res = s.select({"id", "name", "color"})
-              .from("person")
-              .where("id"_col == 8)
-              .group_by("color")
-              .order_by("name").asc()
-              .fetch_all();
+  auto res = s.create()
+              .table("person", {
+                make_pk_column<unsigned long>("id"),
+                make_column<std::string>("name", 255),
+                make_column<std::string>("color", 63)
+              })
+              .execute();
+
+  auto result = s.select({"id", "name", "color"})
+                 .from("person")
+                 .where("id"_col == 8)
+                 .group_by("color")
+                 .order_by("name").asc()
+                 .fetch_all();
 
   // Todo: prepare test data
-  REQUIRE(true);
-//  REQUIRE(res.str() == R"(SELECT "id", "name", "color" FROM "person" WHERE "id" = 8 GROUP BY "color" ORDER BY "name" ASC)");
+
+  s.drop().table("person").execute();
 }
 
 TEST_CASE("Execute insert statement", "[session]") {
   connection_pool<connection> pool("sqlite://sqlite.db", 4);
   session s(pool);
 
-  auto res = s.insert()
-              .into("person", {"id", "name", "color"})
-              .values({7, "george", "green"})
+  auto res = s.create()
+              .table("person", {
+                make_pk_column<unsigned long>("id"),
+                make_column<std::string>("name", 255),
+                make_column<std::string>("color", 63)
+              })
               .execute();
 
+  res = s.insert()
+         .into("person", {"id", "name", "color"})
+         .values({7, "george", "green"})
+         .execute();
+
+  REQUIRE(res.first == 1);
   REQUIRE(res.second == R"(INSERT INTO "person" ("id", "name", "color") VALUES (7, 'george', 'green'))");
 
-  using namespace matador::test;
-  product p;
-  p.discontinued = false;
-  p.reorder_level = 1;
-  p.units_in_order = 2;
-  p.units_in_stock = 100;
-  p.unit_price = 49;
-  p.quantity_per_unit = "pcs";
-  p.category = make_foreign<matador::test::category>();
-  p.category->id = 7;
-  p.supplier = make_foreign<matador::test::supplier>();
-  p.supplier->id = 13;
-  p.product_name = "candle";
-
-  res = s.insert().into<product>("product").values(p).execute();
-
-  REQUIRE(res.second == R"(INSERT INTO "product" ("product_name", "supplier_id", "category_id", "quantity_per_unit", "unit_price", "units_in_stock", "units_in_order", "reorder_level", "discontinued") VALUES ('candle', 13, 7, 'pcs', 49, 100, 2, 1, 0))");
-
-  res = s.insert().into("product", p).execute();
-
-  REQUIRE(res.second == R"(INSERT INTO "product" ("product_name", "supplier_id", "category_id", "quantity_per_unit", "unit_price", "units_in_stock", "units_in_order", "reorder_level", "discontinued") VALUES ('candle', 13, 7, 'pcs', 49, 100, 2, 1, 0))");
+  s.drop().table("person").execute();
 }
 
 TEST_CASE("Execute update statement", "[session]") {
   connection_pool<connection> pool("sqlite://sqlite.db", 4);
   session s(pool);
 
-  auto res = s.update("person")
-              .set({
-                     {"name",  "george"},
-                     {"color", "green"}
-                   })
-              .where("id"_col == 9)
-              .execute();
+  auto res = s.create()
+    .table("person", {
+      make_pk_column<unsigned long>("id"),
+      make_column<std::string>("name", 255),
+      make_column<std::string>("color", 63)
+    })
+    .execute();
 
-  REQUIRE(res.second == R"(UPDATE "person" SET "name"='george', "color"='green' WHERE "id" = 9)");
+  res = s.insert()
+    .into("person", {"id", "name", "color"})
+    .values({7, "george", "green"})
+    .execute();
 
-  using namespace matador::test;
-  product p;
-  p.discontinued = false;
-  p.reorder_level = 1;
-  p.units_in_order = 2;
-  p.units_in_stock = 100;
-  p.unit_price = 49;
-  p.quantity_per_unit = "pcs";
-  p.category = make_foreign<matador::test::category>();
-  p.category->id = 7;
-  p.supplier = make_foreign<matador::test::supplier>();
-  p.supplier->id = 13;
-  p.product_name = "candle";
+  REQUIRE(res.first == 1);
+  REQUIRE(res.second == R"(INSERT INTO "person" ("id", "name", "color") VALUES (7, 'george', 'green'))");
 
-  res = s.update("product")
-         .set(p)
+  res = s.update("person")
+         .set({
+                {"name",  "george"},
+                {"color", "green"}
+              })
          .where("id"_col == 9)
          .execute();
 
-  REQUIRE(res.second == R"(UPDATE "product" SET "product_name"='candle', "supplier_id"=13, "category_id"=7, "quantity_per_unit"='pcs', "unit_price"=49, "units_in_stock"=100, "units_in_order"=2, "reorder_level"=1, "discontinued"=0 WHERE "id" = 9)");
+  REQUIRE(res.second == R"(UPDATE "person" SET "name"='george', "color"='green' WHERE "id" = 9)");
+
+  s.drop().table("person").execute();
 }
 
 TEST_CASE("Execute delete statement", "[session]") {