diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8e5666c2..69152211 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@
 - Enh #312: Update `bit` type according to main PR yiisoft/db#860 (@Tigrov)
 - Enh #315: Raise minimum PHP version to `^8.1` with minor refactoring (@Tigrov)
 - Enh #314: Implement `ColumnFactory` class (@Tigrov)
+- Enh #317: Separate column type constants (@Tigrov)
 
 ## 1.2.0 March 21, 2024
 
diff --git a/src/Column.php b/src/Column.php
index 7253eebb..d6869619 100644
--- a/src/Column.php
+++ b/src/Column.php
@@ -15,7 +15,7 @@
  * For example, the following code creates a column schema for an integer column:
  *
  * ```php
- * $column = (new Column(SchemaInterface::TYPE_INTEGER))->notNull()->defaultValue(0);
+ * $column = (new Column(ColumnType::INTEGER))->notNull()->defaultValue(0);
  * ```
  *
  * Provides a fluent interface, which means that the methods can be chained together to create a column schema with
diff --git a/src/Column/ColumnFactory.php b/src/Column/ColumnFactory.php
index 7b759d7b..96ab9d18 100644
--- a/src/Column/ColumnFactory.php
+++ b/src/Column/ColumnFactory.php
@@ -4,8 +4,8 @@
 
 namespace Yiisoft\Db\Sqlite\Column;
 
+use Yiisoft\Db\Constant\ColumnType;
 use Yiisoft\Db\Schema\Column\AbstractColumnFactory;
-use Yiisoft\Db\Schema\SchemaInterface;
 
 final class ColumnFactory extends AbstractColumnFactory
 {
@@ -17,47 +17,47 @@ final class ColumnFactory extends AbstractColumnFactory
      * @psalm-suppress MissingClassConstType
      */
     private const TYPE_MAP = [
-        'bool' => SchemaInterface::TYPE_BOOLEAN,
-        'boolean' => SchemaInterface::TYPE_BOOLEAN,
-        'bit' => SchemaInterface::TYPE_BIT,
-        'tinyint' => SchemaInterface::TYPE_TINYINT,
-        'smallint' => SchemaInterface::TYPE_SMALLINT,
-        'mediumint' => SchemaInterface::TYPE_INTEGER,
-        'int' => SchemaInterface::TYPE_INTEGER,
-        'integer' => SchemaInterface::TYPE_INTEGER,
-        'bigint' => SchemaInterface::TYPE_BIGINT,
-        'float' => SchemaInterface::TYPE_FLOAT,
-        'real' => SchemaInterface::TYPE_FLOAT,
-        'double' => SchemaInterface::TYPE_DOUBLE,
-        'decimal' => SchemaInterface::TYPE_DECIMAL,
-        'numeric' => SchemaInterface::TYPE_DECIMAL,
-        'char' => SchemaInterface::TYPE_CHAR,
-        'varchar' => SchemaInterface::TYPE_STRING,
-        'string' => SchemaInterface::TYPE_STRING,
-        'enum' => SchemaInterface::TYPE_STRING,
-        'tinytext' => SchemaInterface::TYPE_TEXT,
-        'mediumtext' => SchemaInterface::TYPE_TEXT,
-        'longtext' => SchemaInterface::TYPE_TEXT,
-        'text' => SchemaInterface::TYPE_TEXT,
-        'blob' => SchemaInterface::TYPE_BINARY,
-        'year' => SchemaInterface::TYPE_DATE,
-        'date' => SchemaInterface::TYPE_DATE,
-        'time' => SchemaInterface::TYPE_TIME,
-        'datetime' => SchemaInterface::TYPE_DATETIME,
-        'timestamp' => SchemaInterface::TYPE_TIMESTAMP,
-        'json' => SchemaInterface::TYPE_JSON,
+        'bool' => ColumnType::BOOLEAN,
+        'boolean' => ColumnType::BOOLEAN,
+        'bit' => ColumnType::BIT,
+        'tinyint' => ColumnType::TINYINT,
+        'smallint' => ColumnType::SMALLINT,
+        'mediumint' => ColumnType::INTEGER,
+        'int' => ColumnType::INTEGER,
+        'integer' => ColumnType::INTEGER,
+        'bigint' => ColumnType::BIGINT,
+        'float' => ColumnType::FLOAT,
+        'real' => ColumnType::FLOAT,
+        'double' => ColumnType::DOUBLE,
+        'decimal' => ColumnType::DECIMAL,
+        'numeric' => ColumnType::DECIMAL,
+        'char' => ColumnType::CHAR,
+        'varchar' => ColumnType::STRING,
+        'string' => ColumnType::STRING,
+        'enum' => ColumnType::STRING,
+        'tinytext' => ColumnType::TEXT,
+        'mediumtext' => ColumnType::TEXT,
+        'longtext' => ColumnType::TEXT,
+        'text' => ColumnType::TEXT,
+        'blob' => ColumnType::BINARY,
+        'year' => ColumnType::DATE,
+        'date' => ColumnType::DATE,
+        'time' => ColumnType::TIME,
+        'datetime' => ColumnType::DATETIME,
+        'timestamp' => ColumnType::TIMESTAMP,
+        'json' => ColumnType::JSON,
     ];
 
     protected function getType(string $dbType, array $info = []): string
     {
-        $type = self::TYPE_MAP[$dbType] ?? SchemaInterface::TYPE_STRING;
+        $type = self::TYPE_MAP[$dbType] ?? ColumnType::STRING;
 
         if (
-            ($type === SchemaInterface::TYPE_BIT || $type === SchemaInterface::TYPE_TINYINT)
+            ($type === ColumnType::BIT || $type === ColumnType::TINYINT)
             && isset($info['size'])
             && $info['size'] === 1
         ) {
-            return SchemaInterface::TYPE_BOOLEAN;
+            return ColumnType::BOOLEAN;
         }
 
         return $type;
diff --git a/src/QueryBuilder.php b/src/QueryBuilder.php
index 4f867bd2..1b255808 100644
--- a/src/QueryBuilder.php
+++ b/src/QueryBuilder.php
@@ -4,6 +4,8 @@
 
 namespace Yiisoft\Db\Sqlite;
 
+use Yiisoft\Db\Constant\ColumnType;
+use Yiisoft\Db\Constant\PseudoType;
 use Yiisoft\Db\QueryBuilder\AbstractQueryBuilder;
 use Yiisoft\Db\Schema\QuoterInterface;
 use Yiisoft\Db\Schema\SchemaInterface;
@@ -17,30 +19,30 @@ final class QueryBuilder extends AbstractQueryBuilder
      * @var string[] Mapping from abstract column types (keys) to physical column types (values).
      */
     protected array $typeMap = [
-        SchemaInterface::TYPE_PK => 'integer PRIMARY KEY AUTOINCREMENT NOT NULL',
-        SchemaInterface::TYPE_UPK => 'integer PRIMARY KEY AUTOINCREMENT NOT NULL',
-        SchemaInterface::TYPE_BIGPK => 'integer PRIMARY KEY AUTOINCREMENT NOT NULL',
-        SchemaInterface::TYPE_UBIGPK => 'integer PRIMARY KEY AUTOINCREMENT NOT NULL',
-        SchemaInterface::TYPE_CHAR => 'char(1)',
-        SchemaInterface::TYPE_STRING => 'varchar(255)',
-        SchemaInterface::TYPE_TEXT => 'text',
-        SchemaInterface::TYPE_TINYINT => 'tinyint',
-        SchemaInterface::TYPE_SMALLINT => 'smallint',
-        SchemaInterface::TYPE_INTEGER => 'integer',
-        SchemaInterface::TYPE_BIGINT => 'bigint',
-        SchemaInterface::TYPE_FLOAT => 'float',
-        SchemaInterface::TYPE_DOUBLE => 'double',
-        SchemaInterface::TYPE_DECIMAL => 'decimal(10,0)',
-        SchemaInterface::TYPE_DATETIME => 'datetime',
-        SchemaInterface::TYPE_TIMESTAMP => 'timestamp',
-        SchemaInterface::TYPE_TIME => 'time',
-        SchemaInterface::TYPE_DATE => 'date',
-        SchemaInterface::TYPE_BINARY => 'blob',
-        SchemaInterface::TYPE_BOOLEAN => 'boolean',
-        SchemaInterface::TYPE_MONEY => 'decimal(19,4)',
-        SchemaInterface::TYPE_UUID => 'blob(16)',
-        SchemaInterface::TYPE_UUID_PK => 'blob(16) PRIMARY KEY',
-        SchemaInterface::TYPE_JSON => 'json',
+        PseudoType::PK => 'integer PRIMARY KEY AUTOINCREMENT NOT NULL',
+        PseudoType::UPK => 'integer PRIMARY KEY AUTOINCREMENT NOT NULL',
+        PseudoType::BIGPK => 'integer PRIMARY KEY AUTOINCREMENT NOT NULL',
+        PseudoType::UBIGPK => 'integer PRIMARY KEY AUTOINCREMENT NOT NULL',
+        ColumnType::CHAR => 'char(1)',
+        ColumnType::STRING => 'varchar(255)',
+        ColumnType::TEXT => 'text',
+        ColumnType::TINYINT => 'tinyint',
+        ColumnType::SMALLINT => 'smallint',
+        ColumnType::INTEGER => 'integer',
+        ColumnType::BIGINT => 'bigint',
+        ColumnType::FLOAT => 'float',
+        ColumnType::DOUBLE => 'double',
+        ColumnType::DECIMAL => 'decimal(10,0)',
+        ColumnType::DATETIME => 'datetime',
+        ColumnType::TIMESTAMP => 'timestamp',
+        ColumnType::TIME => 'time',
+        ColumnType::DATE => 'date',
+        ColumnType::BINARY => 'blob',
+        ColumnType::BOOLEAN => 'boolean',
+        ColumnType::MONEY => 'decimal(19,4)',
+        ColumnType::UUID => 'blob(16)',
+        PseudoType::UUID_PK => 'blob(16) PRIMARY KEY',
+        ColumnType::JSON => 'json',
     ];
 
     public function __construct(QuoterInterface $quoter, SchemaInterface $schema)
diff --git a/src/Schema.php b/src/Schema.php
index 0252be1c..29a321c1 100644
--- a/src/Schema.php
+++ b/src/Schema.php
@@ -5,6 +5,7 @@
 namespace Yiisoft\Db\Sqlite;
 
 use Throwable;
+use Yiisoft\Db\Constant\ColumnType;
 use Yiisoft\Db\Constraint\CheckConstraint;
 use Yiisoft\Db\Constraint\Constraint;
 use Yiisoft\Db\Constraint\ForeignKeyConstraint;
@@ -337,7 +338,7 @@ protected function findColumns(TableSchemaInterface $table): bool
 
         foreach ($columns as $info) {
             if (in_array($info['name'], $jsonColumns, true)) {
-                $info['type'] = self::TYPE_JSON;
+                $info['type'] = ColumnType::JSON;
             }
 
             $column = $this->loadColumnSchema($info);
diff --git a/tests/CommandTest.php b/tests/CommandTest.php
index aaa7c38a..c68b5ffa 100644
--- a/tests/CommandTest.php
+++ b/tests/CommandTest.php
@@ -5,11 +5,12 @@
 namespace Yiisoft\Db\Sqlite\Tests;
 
 use Throwable;
+use Yiisoft\Db\Constant\ColumnType;
+use Yiisoft\Db\Constant\PseudoType;
 use Yiisoft\Db\Exception\Exception;
 use Yiisoft\Db\Exception\InvalidConfigException;
 use Yiisoft\Db\Exception\NotSupportedException;
 use Yiisoft\Db\Expression\JsonExpression;
-use Yiisoft\Db\Schema\SchemaInterface;
 use Yiisoft\Db\Sqlite\Tests\Support\TestTrait;
 use Yiisoft\Db\Tests\Common\CommonCommandTest;
 
@@ -391,7 +392,7 @@ public function testResetSequence(): void
 
         $command->createTable(
             '{{testCreateTable}}',
-            ['id' => SchemaInterface::TYPE_PK, 'bar' => SchemaInterface::TYPE_INTEGER],
+            ['id' => PseudoType::PK, 'bar' => ColumnType::INTEGER],
         )->execute();
 
         $command->insert('{{testCreateTable}}', ['bar' => 1])->execute();
@@ -508,8 +509,8 @@ public function testJsonTable(): void
         }
 
         $command->createTable('json_table', [
-            'id' => SchemaInterface::TYPE_PK,
-            'json_col' => SchemaInterface::TYPE_JSON,
+            'id' => PseudoType::PK,
+            'json_col' => ColumnType::JSON,
         ])->execute();
 
         $command->insert('json_table', ['id' => 1, 'json_col' => ['a' => 1, 'b' => 2]])->execute();
diff --git a/tests/Provider/ColumnFactoryProvider.php b/tests/Provider/ColumnFactoryProvider.php
index c095a7e1..9904e2d1 100644
--- a/tests/Provider/ColumnFactoryProvider.php
+++ b/tests/Provider/ColumnFactoryProvider.php
@@ -4,6 +4,7 @@
 
 namespace Yiisoft\Db\Sqlite\Tests\Provider;
 
+use Yiisoft\Db\Constant\ColumnType;
 use Yiisoft\Db\Schema\Column\BinaryColumnSchema;
 use Yiisoft\Db\Schema\Column\BitColumnSchema;
 use Yiisoft\Db\Schema\Column\BooleanColumnSchema;
@@ -18,35 +19,35 @@ public static function dbTypes(): array
     {
         return [
             // db type, expected abstract type, expected instance of
-            ['bool', 'boolean', BooleanColumnSchema::class],
-            ['boolean', 'boolean', BooleanColumnSchema::class],
-            ['bit', 'bit', BitColumnSchema::class],
-            ['tinyint', 'tinyint', IntegerColumnSchema::class],
-            ['smallint', 'smallint', IntegerColumnSchema::class],
-            ['mediumint', 'integer', IntegerColumnSchema::class],
-            ['int', 'integer', IntegerColumnSchema::class],
-            ['integer', 'integer', IntegerColumnSchema::class],
-            ['bigint', 'bigint', IntegerColumnSchema::class],
-            ['float', 'float', DoubleColumnSchema::class],
-            ['real', 'float', DoubleColumnSchema::class],
-            ['double', 'double', DoubleColumnSchema::class],
-            ['decimal', 'decimal', DoubleColumnSchema::class],
-            ['numeric', 'decimal', DoubleColumnSchema::class],
-            ['char', 'char', StringColumnSchema::class],
-            ['varchar', 'string', StringColumnSchema::class],
-            ['string', 'string', StringColumnSchema::class],
-            ['enum', 'string', StringColumnSchema::class],
-            ['tinytext', 'text', StringColumnSchema::class],
-            ['mediumtext', 'text', StringColumnSchema::class],
-            ['longtext', 'text', StringColumnSchema::class],
-            ['text', 'text', StringColumnSchema::class],
-            ['blob', 'binary', BinaryColumnSchema::class],
-            ['year', 'date', StringColumnSchema::class],
-            ['date', 'date', StringColumnSchema::class],
-            ['time', 'time', StringColumnSchema::class],
-            ['datetime', 'datetime', StringColumnSchema::class],
-            ['timestamp', 'timestamp', StringColumnSchema::class],
-            ['json', 'json', JsonColumnSchema::class],
+            ['bool', ColumnType::BOOLEAN, BooleanColumnSchema::class],
+            ['boolean', ColumnType::BOOLEAN, BooleanColumnSchema::class],
+            ['bit', ColumnType::BIT, BitColumnSchema::class],
+            ['tinyint', ColumnType::TINYINT, IntegerColumnSchema::class],
+            ['smallint', ColumnType::SMALLINT, IntegerColumnSchema::class],
+            ['mediumint', ColumnType::INTEGER, IntegerColumnSchema::class],
+            ['int', ColumnType::INTEGER, IntegerColumnSchema::class],
+            ['integer', ColumnType::INTEGER, IntegerColumnSchema::class],
+            ['bigint', ColumnType::BIGINT, IntegerColumnSchema::class],
+            ['float', ColumnType::FLOAT, DoubleColumnSchema::class],
+            ['real', ColumnType::FLOAT, DoubleColumnSchema::class],
+            ['double', ColumnType::DOUBLE, DoubleColumnSchema::class],
+            ['decimal', ColumnType::DECIMAL, DoubleColumnSchema::class],
+            ['numeric', ColumnType::DECIMAL, DoubleColumnSchema::class],
+            ['char', ColumnType::CHAR, StringColumnSchema::class],
+            ['varchar', ColumnType::STRING, StringColumnSchema::class],
+            ['string', ColumnType::STRING, StringColumnSchema::class],
+            ['enum', ColumnType::STRING, StringColumnSchema::class],
+            ['tinytext', ColumnType::TEXT, StringColumnSchema::class],
+            ['mediumtext', ColumnType::TEXT, StringColumnSchema::class],
+            ['longtext', ColumnType::TEXT, StringColumnSchema::class],
+            ['text', ColumnType::TEXT, StringColumnSchema::class],
+            ['blob', ColumnType::BINARY, BinaryColumnSchema::class],
+            ['year', ColumnType::DATE, StringColumnSchema::class],
+            ['date', ColumnType::DATE, StringColumnSchema::class],
+            ['time', ColumnType::TIME, StringColumnSchema::class],
+            ['datetime', ColumnType::DATETIME, StringColumnSchema::class],
+            ['timestamp', ColumnType::TIMESTAMP, StringColumnSchema::class],
+            ['json', ColumnType::JSON, JsonColumnSchema::class],
         ];
     }
 
@@ -54,8 +55,8 @@ public static function definitions(): array
     {
         $definitions = parent::definitions();
 
-        $definitions[] = ['bit(1)', 'boolean', BooleanColumnSchema::class, ['getSize' => 1]];
-        $definitions[] = ['tinyint(1)', 'boolean', BooleanColumnSchema::class, ['getSize' => 1]];
+        $definitions[] = ['bit(1)', ColumnType::BOOLEAN, BooleanColumnSchema::class, ['getDbType' => 'bit', 'getSize' => 1]];
+        $definitions[] = ['tinyint(1)', ColumnType::BOOLEAN, BooleanColumnSchema::class, ['getDbType' => 'tinyint', 'getSize' => 1]];
 
         return $definitions;
     }
diff --git a/tests/Provider/ColumnSchemaBuilderProvider.php b/tests/Provider/ColumnSchemaBuilderProvider.php
index cd05c57b..d92bf44c 100644
--- a/tests/Provider/ColumnSchemaBuilderProvider.php
+++ b/tests/Provider/ColumnSchemaBuilderProvider.php
@@ -4,7 +4,7 @@
 
 namespace Yiisoft\Db\Sqlite\Tests\Provider;
 
-use Yiisoft\Db\Schema\SchemaInterface;
+use Yiisoft\Db\Constant\ColumnType;
 
 final class ColumnSchemaBuilderProvider extends \Yiisoft\Db\Tests\Provider\ColumnSchemaBuilderProvider
 {
@@ -19,7 +19,7 @@ public static function types(): array
 
         return [
             ...$types,
-            ['integer UNSIGNED', SchemaInterface::TYPE_INTEGER, null, [['unsigned']]],
+            ['integer UNSIGNED', ColumnType::INTEGER, null, [['unsigned']]],
         ];
     }
 
diff --git a/tests/QueryBuilderTest.php b/tests/QueryBuilderTest.php
index 44145585..3f65ed1d 100644
--- a/tests/QueryBuilderTest.php
+++ b/tests/QueryBuilderTest.php
@@ -5,6 +5,7 @@
 namespace Yiisoft\Db\Sqlite\Tests;
 
 use JsonException;
+use Yiisoft\Db\Constant\ColumnType;
 use Yiisoft\Db\Exception\Exception;
 use Yiisoft\Db\Exception\InvalidArgumentException;
 use Yiisoft\Db\Exception\InvalidConfigException;
@@ -15,7 +16,6 @@
 use Yiisoft\Db\Query\Query;
 use Yiisoft\Db\Query\QueryInterface;
 use Yiisoft\Db\QueryBuilder\Condition\JsonOverlapsCondition;
-use Yiisoft\Db\Schema\SchemaInterface;
 use Yiisoft\Db\Sqlite\Column;
 use Yiisoft\Db\Sqlite\Tests\Support\TestTrait;
 use Yiisoft\Db\Tests\Common\CommonQueryBuilderTest;
@@ -172,7 +172,7 @@ public function testAlterColumn(): void
         $this->expectException(NotSupportedException::class);
         $this->expectExceptionMessage('Yiisoft\Db\Sqlite\DDLQueryBuilder::alterColumn is not supported by SQLite.');
 
-        $qb->alterColumn('customer', 'email', SchemaInterface::TYPE_STRING);
+        $qb->alterColumn('customer', 'email', ColumnType::STRING);
     }
 
     /**
@@ -750,7 +750,7 @@ public function testUpsertExecute(
     public function testJsonColumn()
     {
         $qb = $this->getConnection()->getQueryBuilder();
-        $columnSchemaBuilder = new Column(SchemaInterface::TYPE_JSON);
+        $columnSchemaBuilder = new Column(ColumnType::JSON);
 
         $this->assertSame(
             'ALTER TABLE `json_table` ADD `json_col` json',