diff --git a/WebFiori/Database/Factory/ColumnFactory.php b/WebFiori/Database/Factory/ColumnFactory.php
index fd735bf..00e7a39 100644
--- a/WebFiori/Database/Factory/ColumnFactory.php
+++ b/WebFiori/Database/Factory/ColumnFactory.php
@@ -15,6 +15,7 @@
 use WebFiori\Database\Column;
 use WebFiori\Database\ConnectionInfo;
 use WebFiori\Database\DatabaseException;
+use WebFiori\Database\DataType;
 use WebFiori\Database\MsSql\MSSQLColumn;
 use WebFiori\Database\MySql\MySQLColumn;
 use WebFiori\Database\Util\TypesMap;
@@ -72,9 +73,20 @@ public static function create(string $database, string $name, array $options = [
             $datatype = 'mixed';
         }
 
-        $col->setDatatype($datatype);
-        $size = isset($options['size']) ? intval($options['size']) : 1;
-        $col->setSize($size);
+        $resolved = self::resolveDatatype($database, $datatype);
+        $col->setDatatype($resolved);
+
+        $explicitSize = isset($options['size']) ? intval($options['size']) : null;
+
+        if ($explicitSize !== null) {
+            $col->setSize($explicitSize);
+        } else if ($resolved !== $datatype) {
+            // Type was auto-mapped; use a large default for string/binary types
+            // to preserve the intent of the original unsized type.
+            $col->setSize(self::getDefaultMappedSize($resolved));
+        } else {
+            $col->setSize(1);
+        }
 
         self::primaryCheck($col, $options);
         self::columnAttributesCheck($col, $options);
@@ -124,6 +136,57 @@ public static function map(string $to, Column $column) : Column {
 
         return self::create($to, $column->getName(), $optionsArr);
     }
+    /**
+     * Resolves a datatype for the target database engine.
+     * 
+     * If the type is natively supported by the target engine, it is returned
+     * as-is. Otherwise, the method searches all registered engine mappings in
+     * {@see TypesMap::MAP} to find an equivalent type for the target engine.
+     * 
+     * @param string $database Target database engine (e.g. 'mysql', 'mssql').
+     * @param string $datatype The requested datatype.
+     * 
+     * @return string The resolved datatype for the target engine.
+     */
+    private static function resolveDatatype(string $database, string $datatype): string {
+        $normalized = strtolower(trim($datatype));
+
+        if (in_array($normalized, DataType::getSupportedDataTypes($database))) {
+            return $normalized;
+        }
+
+        foreach (array_keys(TypesMap::MAP) as $sourceEngine) {
+            if ($sourceEngine === $database) {
+                continue;
+            }
+
+            $mapped = TypesMap::getType($sourceEngine, $database, $normalized);
+
+            if ($mapped !== '') {
+                return $mapped;
+            }
+        }
+
+        return $normalized;
+    }
+    /**
+     * Returns a sensible default size for a type that was auto-mapped from
+     * an unsized type (e.g. TEXT → nvarchar).
+     * 
+     * @param string $resolvedType The mapped type.
+     * 
+     * @return int Default size.
+     */
+    private static function getDefaultMappedSize(string $resolvedType): int {
+        return match ($resolvedType) {
+            'nvarchar' => 4000,
+            'varchar' => 8000,
+            'nchar', 'char' => 255,
+            'binary', 'varbinary' => 8000,
+            'text', 'mediumtext', 'blob', 'mediumblob', 'longblob', 'tinyblob' => 1,
+            default => 1
+        };
+    }
     /**
      * 
      * @param MSSQLColumn $col
diff --git a/tests/WebFiori/Tests/Database/MsSql/MSSQLColumnTest.php b/tests/WebFiori/Tests/Database/MsSql/MSSQLColumnTest.php
index f7a0641..9f44b55 100644
--- a/tests/WebFiori/Tests/Database/MsSql/MSSQLColumnTest.php
+++ b/tests/WebFiori/Tests/Database/MsSql/MSSQLColumnTest.php
@@ -2,6 +2,7 @@
 namespace WebFiori\Tests\Database\MsSql;
 
 use PHPUnit\Framework\TestCase;
+use WebFiori\Database\DataType;
 use WebFiori\Database\Factory\ColumnFactory;
 use WebFiori\Database\MsSql\MSSQLColumn;
 use WebFiori\Database\MySql\MySQLColumn;
@@ -581,4 +582,96 @@ public function testIdentity02() {
         $col->setIsIdentity(true);
         $this->assertEquals('[iden] [bigint] identity(1,1) not null',$col.'');
     }
+    /**
+     * @test
+     * Test that MySQL-only types are auto-mapped when creating MSSQL columns.
+     */
+    public function testAutoMapMySQLTextToMSSQL() {
+        $col = ColumnFactory::create('mssql', 'content', ['type' => DataType::TEXT]);
+        $this->assertInstanceOf(MSSQLColumn::class, $col);
+        $this->assertEquals('nvarchar', $col->getDatatype());
+        $this->assertEquals(4000, $col->getSize());
+    }
+    /**
+     * @test
+     */
+    public function testAutoMapMySQLMediumTextToMSSQL() {
+        $col = ColumnFactory::create('mssql', 'body', ['type' => DataType::TEXT_MEDIUM]);
+        $this->assertInstanceOf(MSSQLColumn::class, $col);
+        $this->assertEquals('nvarchar', $col->getDatatype());
+        $this->assertEquals(4000, $col->getSize());
+    }
+    /**
+     * @test
+     */
+    public function testAutoMapMySQLBlobToMSSQL() {
+        $col = ColumnFactory::create('mssql', 'data', ['type' => DataType::BLOB]);
+        $this->assertInstanceOf(MSSQLColumn::class, $col);
+        $this->assertEquals('binary', $col->getDatatype());
+    }
+    /**
+     * @test
+     */
+    public function testAutoMapMySQLLongBlobToMSSQL() {
+        $col = ColumnFactory::create('mssql', 'data', ['type' => DataType::BLOB_LONG]);
+        $this->assertInstanceOf(MSSQLColumn::class, $col);
+        $this->assertEquals('binary', $col->getDatatype());
+    }
+    /**
+     * @test
+     */
+    public function testAutoMapMySQLMediumBlobToMSSQL() {
+        $col = ColumnFactory::create('mssql', 'data', ['type' => DataType::BLOB_MEDIUM]);
+        $this->assertInstanceOf(MSSQLColumn::class, $col);
+        $this->assertEquals('binary', $col->getDatatype());
+    }
+    /**
+     * @test
+     */
+    public function testAutoMapMySQLTinyBlobToMSSQL() {
+        $col = ColumnFactory::create('mssql', 'data', ['type' => DataType::BLOB_TINY]);
+        $this->assertInstanceOf(MSSQLColumn::class, $col);
+        $this->assertEquals('binary', $col->getDatatype());
+    }
+    /**
+     * @test
+     */
+    public function testAutoMapMySQLDoubleToMSSQL() {
+        $col = ColumnFactory::create('mssql', 'price', ['type' => DataType::DOUBLE]);
+        $this->assertInstanceOf(MSSQLColumn::class, $col);
+        $this->assertEquals('float', $col->getDatatype());
+    }
+    /**
+     * @test
+     */
+    public function testAutoMapMySQLTimestampToMSSQL() {
+        $col = ColumnFactory::create('mssql', 'ts', ['type' => DataType::TIMESTAMP]);
+        $this->assertInstanceOf(MSSQLColumn::class, $col);
+        $this->assertEquals('datetime2', $col->getDatatype());
+    }
+    /**
+     * @test
+     * Test that explicit size is preserved when type is auto-mapped.
+     */
+    public function testAutoMapPreservesExplicitSize() {
+        $col = ColumnFactory::create('mssql', 'summary', ['type' => DataType::TEXT, 'size' => 500]);
+        $this->assertEquals('nvarchar', $col->getDatatype());
+        $this->assertEquals(500, $col->getSize());
+    }
+    /**
+     * @test
+     * Test that native MSSQL types are not affected by auto-mapping.
+     */
+    public function testNativeTypesUnaffected() {
+        $col = ColumnFactory::create('mssql', 'name', ['type' => DataType::VARCHAR, 'size' => 100]);
+        $this->assertEquals('varchar', $col->getDatatype());
+        $this->assertEquals(100, $col->getSize());
+
+        $col2 = ColumnFactory::create('mssql', 'num', ['type' => DataType::INT]);
+        $this->assertEquals('int', $col2->getDatatype());
+
+        $col3 = ColumnFactory::create('mssql', 'uname', ['type' => DataType::NVARCHAR, 'size' => 200]);
+        $this->assertEquals('nvarchar', $col3->getDatatype());
+        $this->assertEquals(200, $col3->getSize());
+    }
 }
diff --git a/tests/WebFiori/Tests/Database/MySql/MySQLColumnTest.php b/tests/WebFiori/Tests/Database/MySql/MySQLColumnTest.php
index 82fc65b..57cb799 100644
--- a/tests/WebFiori/Tests/Database/MySql/MySQLColumnTest.php
+++ b/tests/WebFiori/Tests/Database/MySql/MySQLColumnTest.php
@@ -796,4 +796,92 @@ public function testGetPHPType05() {
         $colObj->setIsNull(true);
         $this->assertEquals('string|null', $colObj->getPHPType());
     }
+    /**
+     * @test
+     * Test that MSSQL-only types are auto-mapped when creating MySQL columns.
+     */
+    public function testAutoMapMSSQLBigintToMySQL() {
+        $col = ColumnFactory::create('mysql', 'big_id', ['type' => DataType::BIGINT]);
+        $this->assertInstanceOf(MySQLColumn::class, $col);
+        $this->assertEquals('int', $col->getDatatype());
+    }
+    /**
+     * @test
+     */
+    public function testAutoMapMSSQLBinaryToMySQL() {
+        $col = ColumnFactory::create('mysql', 'data', ['type' => DataType::BINARY]);
+        $this->assertInstanceOf(MySQLColumn::class, $col);
+        $this->assertEquals('blob', $col->getDatatype());
+    }
+    /**
+     * @test
+     */
+    public function testAutoMapMSSQLDateToMySQL() {
+        $col = ColumnFactory::create('mysql', 'd', ['type' => DataType::DATE]);
+        $this->assertInstanceOf(MySQLColumn::class, $col);
+        $this->assertEquals('datetime', $col->getDatatype());
+    }
+    /**
+     * @test
+     */
+    public function testAutoMapMSSQLDatetime2ToMySQL() {
+        $col = ColumnFactory::create('mysql', 'dt', ['type' => DataType::DATETIME2]);
+        $this->assertInstanceOf(MySQLColumn::class, $col);
+        $this->assertEquals('datetime', $col->getDatatype());
+    }
+    /**
+     * @test
+     */
+    public function testAutoMapMSSQLMoneyToMySQL() {
+        $col = ColumnFactory::create('mysql', 'amount', ['type' => DataType::MONEY]);
+        $this->assertInstanceOf(MySQLColumn::class, $col);
+        $this->assertEquals('decimal', $col->getDatatype());
+    }
+    /**
+     * @test
+     */
+    public function testAutoMapMSSQLNcharToMySQL() {
+        $col = ColumnFactory::create('mysql', 'code', ['type' => DataType::NCHAR]);
+        $this->assertInstanceOf(MySQLColumn::class, $col);
+        $this->assertEquals('text', $col->getDatatype());
+    }
+    /**
+     * @test
+     */
+    public function testAutoMapMSSQLNvarcharToMySQL() {
+        $col = ColumnFactory::create('mysql', 'content', ['type' => DataType::NVARCHAR]);
+        $this->assertInstanceOf(MySQLColumn::class, $col);
+        $this->assertEquals('text', $col->getDatatype());
+    }
+    /**
+     * @test
+     */
+    public function testAutoMapMSSQLTimeToMySQL() {
+        $col = ColumnFactory::create('mysql', 't', ['type' => DataType::TIME]);
+        $this->assertInstanceOf(MySQLColumn::class, $col);
+        $this->assertEquals('varchar', $col->getDatatype());
+    }
+    /**
+     * @test
+     */
+    public function testAutoMapMSSQLVarbinaryToMySQL() {
+        $col = ColumnFactory::create('mysql', 'bin', ['type' => DataType::VARBINARY]);
+        $this->assertInstanceOf(MySQLColumn::class, $col);
+        $this->assertEquals('blob', $col->getDatatype());
+    }
+    /**
+     * @test
+     * Test that native MySQL types are not affected by auto-mapping.
+     */
+    public function testNativeTypesUnaffected() {
+        $col = ColumnFactory::create('mysql', 'name', ['type' => DataType::VARCHAR, 'size' => 100]);
+        $this->assertEquals('varchar', $col->getDatatype());
+        $this->assertEquals(100, $col->getSize());
+
+        $col2 = ColumnFactory::create('mysql', 'body', ['type' => DataType::TEXT]);
+        $this->assertEquals('text', $col2->getDatatype());
+
+        $col3 = ColumnFactory::create('mysql', 'num', ['type' => DataType::INT]);
+        $this->assertEquals('int', $col3->getDatatype());
+    }
 }