diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0ac0433df..44ce8fb13 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -38,6 +38,7 @@
 - Enh #864: Realize column factory (@Tigrov)
 - Enh #875: Ignore "Packets out of order..." warnings in `AbstractPdoCommand::internalExecute()` method (@Tigrov)
 - Enh #877: Separate column type constants (@Tigrov)
+- Enh #878: Realize `ColumnBuilder` class (@Tigrov)
 
 ## 1.3.0 March 21, 2024
 
diff --git a/UPGRADE.md b/UPGRADE.md
index aac6197ae..6fe3a7c57 100644
--- a/UPGRADE.md
+++ b/UPGRADE.md
@@ -94,7 +94,7 @@ Each table column has its own class in the `Yiisoft\Db\Schema\Column` namespace
 ### New methods
 
 - `QuoterInterface::getRawTableName()` - returns the raw table name without quotes;
-- `SchemaInterface::getColumnFactory()` - returns the column factory.
+- `ConnectionInterface::getColumnFactory()` - returns the column factory object for concrete DBMS.
 
 ### Remove methods
 
diff --git a/src/Connection/ConnectionInterface.php b/src/Connection/ConnectionInterface.php
index a91580455..55e24a83c 100644
--- a/src/Connection/ConnectionInterface.php
+++ b/src/Connection/ConnectionInterface.php
@@ -14,7 +14,7 @@
 use Yiisoft\Db\Query\BatchQueryResultInterface;
 use Yiisoft\Db\Query\QueryInterface;
 use Yiisoft\Db\QueryBuilder\QueryBuilderInterface;
-use Yiisoft\Db\Schema\Column\ColumnBuilder;
+use Yiisoft\Db\Schema\Column\ColumnFactoryInterface;
 use Yiisoft\Db\Schema\QuoterInterface;
 use Yiisoft\Db\Schema\SchemaInterface;
 use Yiisoft\Db\Schema\TableSchemaInterface;
@@ -87,11 +87,9 @@ public function createTransaction(): TransactionInterface;
     public function close(): void;
 
     /**
-     * Returns the column builder class name for creating column instances.
-     *
-     * @psalm-return class-string<ColumnBuilder>
+     * Returns the column factory for creating column instances.
      */
-    public function getColumnBuilderClass(): string;
+    public function getColumnFactory(): ColumnFactoryInterface;
 
     /**
      * Returns the name of the DB driver for the current `dsn`.
diff --git a/src/Debug/ConnectionInterfaceProxy.php b/src/Debug/ConnectionInterfaceProxy.php
index 9bf96b253..802392be8 100644
--- a/src/Debug/ConnectionInterfaceProxy.php
+++ b/src/Debug/ConnectionInterfaceProxy.php
@@ -10,6 +10,7 @@
 use Yiisoft\Db\Query\BatchQueryResultInterface;
 use Yiisoft\Db\Query\QueryInterface;
 use Yiisoft\Db\QueryBuilder\QueryBuilderInterface;
+use Yiisoft\Db\Schema\Column\ColumnFactoryInterface;
 use Yiisoft\Db\Schema\QuoterInterface;
 use Yiisoft\Db\Schema\SchemaInterface;
 use Yiisoft\Db\Schema\TableSchemaInterface;
@@ -62,9 +63,9 @@ public function close(): void
         $this->connection->close();
     }
 
-    public function getColumnBuilderClass(): string
+    public function getColumnFactory(): ColumnFactoryInterface
     {
-        return $this->connection->getColumnBuilderClass();
+        return $this->connection->getColumnFactory();
     }
 
     public function getLastInsertID(string $sequenceName = null): string
diff --git a/src/Schema/Column/ColumnBuilder.php b/src/Schema/Column/ColumnBuilder.php
index 5f6131869..1d3dd5cbd 100644
--- a/src/Schema/Column/ColumnBuilder.php
+++ b/src/Schema/Column/ColumnBuilder.php
@@ -13,15 +13,10 @@
  */
 class ColumnBuilder
 {
+    // Pseudo-type column builders
     /**
-     * Creates a new column factory instance to build columns.
+     * Builds a column as an `integer` primary key.
      */
-    public static function columnFactory(): ColumnFactoryInterface
-    {
-        return new ColumnFactory();
-    }
-
-    // Pseudo-type column builders
     public static function primaryKey(bool $autoIncrement = true): ColumnSchemaInterface
     {
         return static::integer()
@@ -30,6 +25,9 @@ public static function primaryKey(bool $autoIncrement = true): ColumnSchemaInter
             ->allowNull(false);
     }
 
+    /**
+     * Builds a column as a `smallint` primary key.
+     */
     public static function smallPrimaryKey(bool $autoIncrement = true): ColumnSchemaInterface
     {
         return static::smallint()
@@ -38,6 +36,9 @@ public static function smallPrimaryKey(bool $autoIncrement = true): ColumnSchema
             ->allowNull(false);
     }
 
+    /**
+     * Builds a column as a `bigint` primary key.
+     */
     public static function bigPrimaryKey(bool $autoIncrement = true): ColumnSchemaInterface
     {
         return static::bigint()
@@ -46,6 +47,9 @@ public static function bigPrimaryKey(bool $autoIncrement = true): ColumnSchemaIn
             ->allowNull(false);
     }
 
+    /**
+     * Builds a column as an `uuid` primary key.
+     */
     public static function uuidPrimaryKey(bool $autoIncrement = false): ColumnSchemaInterface
     {
         return static::uuid()
@@ -60,8 +64,7 @@ public static function uuidPrimaryKey(bool $autoIncrement = false): ColumnSchema
      */
     public static function boolean(): ColumnSchemaInterface
     {
-        return static::columnFactory()
-            ->fromType(ColumnType::BOOLEAN);
+        return (new BooleanColumnSchema(ColumnType::BOOLEAN));
     }
 
     /**
@@ -69,8 +72,7 @@ public static function boolean(): ColumnSchemaInterface
      */
     public static function bit(int|null $size = null): ColumnSchemaInterface
     {
-        return static::columnFactory()
-            ->fromType(ColumnType::BIT)
+        return (new BitColumnSchema(ColumnType::BIT))
             ->size($size);
     }
 
@@ -79,8 +81,7 @@ public static function bit(int|null $size = null): ColumnSchemaInterface
      */
     public static function tinyint(int|null $size = null): ColumnSchemaInterface
     {
-        return static::columnFactory()
-            ->fromType(ColumnType::TINYINT)
+        return (new IntegerColumnSchema(ColumnType::TINYINT))
             ->size($size);
     }
 
@@ -89,8 +90,7 @@ public static function tinyint(int|null $size = null): ColumnSchemaInterface
      */
     public static function smallint(int|null $size = null): ColumnSchemaInterface
     {
-        return static::columnFactory()
-            ->fromType(ColumnType::SMALLINT)
+        return (new IntegerColumnSchema(ColumnType::SMALLINT))
             ->size($size);
     }
 
@@ -99,8 +99,7 @@ public static function smallint(int|null $size = null): ColumnSchemaInterface
      */
     public static function integer(int|null $size = null): ColumnSchemaInterface
     {
-        return static::columnFactory()
-            ->fromType(ColumnType::INTEGER)
+        return (new IntegerColumnSchema(ColumnType::INTEGER))
             ->size($size);
     }
 
@@ -109,8 +108,7 @@ public static function integer(int|null $size = null): ColumnSchemaInterface
      */
     public static function bigint(int|null $size = null): ColumnSchemaInterface
     {
-        return static::columnFactory()
-            ->fromType(ColumnType::BIGINT)
+        return (new IntegerColumnSchema(ColumnType::BIGINT))
             ->size($size);
     }
 
@@ -119,8 +117,7 @@ public static function bigint(int|null $size = null): ColumnSchemaInterface
      */
     public static function float(int|null $size = null, int|null $scale = null): ColumnSchemaInterface
     {
-        return static::columnFactory()
-            ->fromType(ColumnType::FLOAT)
+        return (new DoubleColumnSchema(ColumnType::FLOAT))
             ->size($size)
             ->scale($scale);
     }
@@ -130,8 +127,7 @@ public static function float(int|null $size = null, int|null $scale = null): Col
      */
     public static function double(int|null $size = null, int|null $scale = null): ColumnSchemaInterface
     {
-        return static::columnFactory()
-            ->fromType(ColumnType::DOUBLE)
+        return (new DoubleColumnSchema(ColumnType::DOUBLE))
             ->size($size)
             ->scale($scale);
     }
@@ -141,8 +137,7 @@ public static function double(int|null $size = null, int|null $scale = null): Co
      */
     public static function decimal(int|null $size = 10, int|null $scale = 0): ColumnSchemaInterface
     {
-        return static::columnFactory()
-            ->fromType(ColumnType::DECIMAL)
+        return (new DoubleColumnSchema(ColumnType::DECIMAL))
             ->size($size)
             ->scale($scale);
     }
@@ -152,8 +147,7 @@ public static function decimal(int|null $size = 10, int|null $scale = 0): Column
      */
     public static function money(int|null $size = 19, int|null $scale = 4): ColumnSchemaInterface
     {
-        return static::columnFactory()
-            ->fromType(ColumnType::MONEY)
+        return (new DoubleColumnSchema(ColumnType::MONEY))
             ->size($size)
             ->scale($scale);
     }
@@ -163,8 +157,7 @@ public static function money(int|null $size = 19, int|null $scale = 4): ColumnSc
      */
     public static function char(int|null $size = 1): ColumnSchemaInterface
     {
-        return static::columnFactory()
-            ->fromType(ColumnType::CHAR)
+        return (new StringColumnSchema(ColumnType::CHAR))
             ->size($size);
     }
 
@@ -173,8 +166,7 @@ public static function char(int|null $size = 1): ColumnSchemaInterface
      */
     public static function string(int|null $size = 255): ColumnSchemaInterface
     {
-        return static::columnFactory()
-            ->fromType(ColumnType::STRING)
+        return (new StringColumnSchema(ColumnType::STRING))
             ->size($size);
     }
 
@@ -183,8 +175,7 @@ public static function string(int|null $size = 255): ColumnSchemaInterface
      */
     public static function text(int|null $size = null): ColumnSchemaInterface
     {
-        return static::columnFactory()
-            ->fromType(ColumnType::TEXT)
+        return (new StringColumnSchema(ColumnType::TEXT))
             ->size($size);
     }
 
@@ -193,8 +184,7 @@ public static function text(int|null $size = null): ColumnSchemaInterface
      */
     public static function binary(int|null $size = null): ColumnSchemaInterface
     {
-        return static::columnFactory()
-            ->fromType(ColumnType::BINARY)
+        return (new BinaryColumnSchema(ColumnType::BINARY))
             ->size($size);
     }
 
@@ -203,8 +193,7 @@ public static function binary(int|null $size = null): ColumnSchemaInterface
      */
     public static function uuid(): ColumnSchemaInterface
     {
-        return static::columnFactory()
-            ->fromType(ColumnType::UUID);
+        return (new StringColumnSchema(ColumnType::UUID));
     }
 
     /**
@@ -212,8 +201,7 @@ public static function uuid(): ColumnSchemaInterface
      */
     public static function datetime(int|null $size = 0): ColumnSchemaInterface
     {
-        return static::columnFactory()
-            ->fromType(ColumnType::DATETIME)
+        return (new StringColumnSchema(ColumnType::DATETIME))
             ->size($size);
     }
 
@@ -222,8 +210,7 @@ public static function datetime(int|null $size = 0): ColumnSchemaInterface
      */
     public static function timestamp(int|null $size = 0): ColumnSchemaInterface
     {
-        return static::columnFactory()
-            ->fromType(ColumnType::TIMESTAMP)
+        return (new StringColumnSchema(ColumnType::TIMESTAMP))
             ->size($size);
     }
 
@@ -232,8 +219,7 @@ public static function timestamp(int|null $size = 0): ColumnSchemaInterface
      */
     public static function date(): ColumnSchemaInterface
     {
-        return static::columnFactory()
-            ->fromType(ColumnType::DATE);
+        return (new StringColumnSchema(ColumnType::DATE));
     }
 
     /**
@@ -241,8 +227,7 @@ public static function date(): ColumnSchemaInterface
      */
     public static function time(int|null $size = 0): ColumnSchemaInterface
     {
-        return static::columnFactory()
-            ->fromType(ColumnType::TIME)
+        return (new StringColumnSchema(ColumnType::TIME))
             ->size($size);
     }
 
@@ -251,7 +236,6 @@ public static function time(int|null $size = 0): ColumnSchemaInterface
      */
     public static function json(): ColumnSchemaInterface
     {
-        return static::columnFactory()
-            ->fromType(ColumnType::JSON);
+        return (new JsonColumnSchema(ColumnType::JSON));
     }
 }
diff --git a/tests/AbstractColumnBuilderTest.php b/tests/AbstractColumnBuilderTest.php
index dccc38997..9707be712 100644
--- a/tests/AbstractColumnBuilderTest.php
+++ b/tests/AbstractColumnBuilderTest.php
@@ -5,7 +5,7 @@
 namespace Yiisoft\Db\Tests;
 
 use PHPUnit\Framework\TestCase;
-use Yiisoft\Db\Schema\Column\ColumnFactory;
+use Yiisoft\Db\Schema\Column\ColumnBuilder;
 use Yiisoft\Db\Tests\Provider\ColumnBuilderProvider;
 use Yiisoft\Db\Tests\Support\TestTrait;
 
@@ -15,12 +15,9 @@ abstract class AbstractColumnBuilderTest extends TestCase
 {
     use TestTrait;
 
-    public function testColumnFactory(): void
+    public function getColumnBuilderClass(): string
     {
-        $db = $this->getConnection();
-        $columnBuilderClass = $db->getColumnBuilderClass();
-
-        $this->assertInstanceOf(ColumnFactory::class, $columnBuilderClass::columnFactory());
+        return ColumnBuilder::class;
     }
 
     /**
@@ -33,8 +30,7 @@ public function testBuildingMethods(
         string $expectedType,
         array $expectedMethodResults = [],
     ): void {
-        $db = $this->getConnection();
-        $columnBuilderClass = $db->getColumnBuilderClass();
+        $columnBuilderClass = $this->getColumnBuilderClass();
 
         $column = $columnBuilderClass::$buildingMethod(...$args);
 
diff --git a/tests/AbstractColumnFactoryTest.php b/tests/AbstractColumnFactoryTest.php
index 5e8912d3f..1f457242a 100644
--- a/tests/AbstractColumnFactoryTest.php
+++ b/tests/AbstractColumnFactoryTest.php
@@ -17,7 +17,7 @@ abstract class AbstractColumnFactoryTest extends TestCase
     public function testFromDbType(string $dbType, string $expectedType, string $expectedInstanceOf): void
     {
         $db = $this->getConnection();
-        $columnFactory = $db->getColumnBuilderClass()::columnFactory();
+        $columnFactory = $db->getColumnFactory();
 
         $column = $columnFactory->fromDbType($dbType);
 
@@ -36,7 +36,7 @@ public function testFromDefinition(
         array $expectedMethodResults = []
     ): void {
         $db = $this->getConnection();
-        $columnFactory = $db->getColumnBuilderClass()::columnFactory();
+        $columnFactory = $db->getColumnFactory();
 
         $column = $columnFactory->fromDefinition($definition);
 
@@ -61,7 +61,7 @@ public function testFromPseudoType(
         array $expectedMethodResults = []
     ): void {
         $db = $this->getConnection();
-        $columnFactory = $db->getColumnBuilderClass()::columnFactory();
+        $columnFactory = $db->getColumnFactory();
 
         $column = $columnFactory->fromPseudoType($pseudoType);
 
@@ -82,7 +82,7 @@ public function testFromPseudoType(
     public function testFromType(string $type, string $expectedType, string $expectedInstanceOf): void
     {
         $db = $this->getConnection();
-        $columnFactory = $db->getColumnBuilderClass()::columnFactory();
+        $columnFactory = $db->getColumnFactory();
 
         $column = $columnFactory->fromType($type);
 
@@ -93,7 +93,7 @@ public function testFromType(string $type, string $expectedType, string $expecte
     public function testFromDefinitionWithExtra(): void
     {
         $db = $this->getConnection();
-        $columnFactory = $db->getColumnBuilderClass()::columnFactory();
+        $columnFactory = $db->getColumnFactory();
 
         $column = $columnFactory->fromDefinition('char(1) NOT NULL', ['extra' => 'UNIQUE']);
 
diff --git a/tests/Common/CommonPdoConnectionTest.php b/tests/Common/CommonPdoConnectionTest.php
index 9b194a31b..756616e9c 100644
--- a/tests/Common/CommonPdoConnectionTest.php
+++ b/tests/Common/CommonPdoConnectionTest.php
@@ -311,7 +311,7 @@ public function testTransactionRollbackTransactionOnLevel(): void
             'createTransaction',
             'createCommand',
             'close',
-            'getColumnBuilderClass',
+            'getColumnFactory',
             'getDriverName',
             'getLastInsertID',
             'getQueryBuilder',
@@ -346,7 +346,7 @@ public function testGetActivePdo(): void
         $db = $this->getMockBuilder(AbstractPdoConnection::class)->onlyMethods([
             'createCommand',
             'createTransaction',
-            'getColumnBuilderClass',
+            'getColumnFactory',
             'getPdo',
             'getQueryBuilder',
             'getQuoter',
diff --git a/tests/Provider/ColumnBuilderProvider.php b/tests/Provider/ColumnBuilderProvider.php
index 467f84c9d..7deff7338 100644
--- a/tests/Provider/ColumnBuilderProvider.php
+++ b/tests/Provider/ColumnBuilderProvider.php
@@ -62,9 +62,9 @@ public static function buildingMethods(): array
             ['decimal', [], DoubleColumnSchema::class, ColumnType::DECIMAL, ['getSize' => 10, 'getScale' => 0]],
             ['decimal', [8], DoubleColumnSchema::class, ColumnType::DECIMAL, ['getSize' => 8, 'getScale' => 0]],
             ['decimal', [8, 2], DoubleColumnSchema::class, ColumnType::DECIMAL, ['getSize' => 8, 'getScale' => 2]],
-            ['money', [], StringColumnSchema::class, ColumnType::MONEY, ['getSize' => 19, 'getScale' => 4]],
-            ['money', [8], StringColumnSchema::class, ColumnType::MONEY, ['getSize' => 8, 'getScale' => 4]],
-            ['money', [8, 2], StringColumnSchema::class, ColumnType::MONEY, ['getSize' => 8, 'getScale' => 2]],
+            ['money', [], DoubleColumnSchema::class, ColumnType::MONEY, ['getSize' => 19, 'getScale' => 4]],
+            ['money', [8], DoubleColumnSchema::class, ColumnType::MONEY, ['getSize' => 8, 'getScale' => 4]],
+            ['money', [8, 2], DoubleColumnSchema::class, ColumnType::MONEY, ['getSize' => 8, 'getScale' => 2]],
             ['char', [], StringColumnSchema::class, ColumnType::CHAR, ['getSize' => 1]],
             ['char', [100], StringColumnSchema::class, ColumnType::CHAR, ['getSize' => 100]],
             ['string', [], StringColumnSchema::class, ColumnType::STRING, ['getSize' => 255]],
diff --git a/src/Schema/Column/ColumnFactory.php b/tests/Support/Stub/ColumnFactory.php
similarity index 80%
rename from src/Schema/Column/ColumnFactory.php
rename to tests/Support/Stub/ColumnFactory.php
index dade5de53..bd6d4f2bc 100644
--- a/src/Schema/Column/ColumnFactory.php
+++ b/tests/Support/Stub/ColumnFactory.php
@@ -2,9 +2,10 @@
 
 declare(strict_types=1);
 
-namespace Yiisoft\Db\Schema\Column;
+namespace Yiisoft\Db\Tests\Support\Stub;
 
 use Yiisoft\Db\Constant\ColumnType;
+use Yiisoft\Db\Schema\Column\AbstractColumnFactory;
 
 class ColumnFactory extends AbstractColumnFactory
 {
diff --git a/tests/Support/Stub/Connection.php b/tests/Support/Stub/Connection.php
index a3fc1fb82..ac616b0af 100644
--- a/tests/Support/Stub/Connection.php
+++ b/tests/Support/Stub/Connection.php
@@ -8,7 +8,7 @@
 use Yiisoft\Db\Command\CommandInterface;
 use Yiisoft\Db\Driver\Pdo\AbstractPdoConnection;
 use Yiisoft\Db\QueryBuilder\QueryBuilderInterface;
-use Yiisoft\Db\Schema\Column\ColumnBuilder;
+use Yiisoft\Db\Schema\Column\ColumnFactoryInterface;
 use Yiisoft\Db\Schema\Quoter;
 use Yiisoft\Db\Schema\QuoterInterface;
 use Yiisoft\Db\Schema\SchemaInterface;
@@ -43,9 +43,9 @@ public function createTransaction(): TransactionInterface
         return new Transaction($this);
     }
 
-    public function getColumnBuilderClass(): string
+    public function getColumnFactory(): ColumnFactoryInterface
     {
-        return ColumnBuilder::class;
+        return new ColumnFactory();
     }
 
     public function getQueryBuilder(): QueryBuilderInterface