diff --git a/framework/yii/db/Command.php b/framework/yii/db/Command.php
index 7f2d81d..bfb8a26 100644
--- a/framework/yii/db/Command.php
+++ b/framework/yii/db/Command.php
@@ -181,7 +181,7 @@ class Command extends \yii\base\Component
 	{
 		$this->prepare();
 		if ($dataType === null) {
-			$this->pdoStatement->bindParam($name, $value, $this->db->schema->getPdoType($value));
+			$this->pdoStatement->bindParam($name, $value, $this->getPdoType($value));
 		} elseif ($length === null) {
 			$this->pdoStatement->bindParam($name, $value, $dataType);
 		} elseif ($driverOptions === null) {
@@ -208,7 +208,7 @@ class Command extends \yii\base\Component
 	{
 		$this->prepare();
 		if ($dataType === null) {
-			$this->pdoStatement->bindValue($name, $value, $this->db->schema->getPdoType($value));
+			$this->pdoStatement->bindValue($name, $value, $this->getPdoType($value));
 		} else {
 			$this->pdoStatement->bindValue($name, $value, $dataType);
 		}
@@ -236,7 +236,7 @@ class Command extends \yii\base\Component
 					$type = $value[1];
 					$value = $value[0];
 				} else {
-					$type = $this->db->schema->getPdoType($value);
+					$type = $this->getPdoType($value);
 				}
 				$this->pdoStatement->bindValue($name, $value, $type);
 				$this->_params[$name] = $value;
@@ -246,6 +246,25 @@ class Command extends \yii\base\Component
 	}
 
 	/**
+	 * Determines the PDO type for the given PHP data value.
+	 * @param mixed $data the data whose PDO type is to be determined
+	 * @return integer the PDO type
+	 * @see http://www.php.net/manual/en/pdo.constants.php
+	 */
+	private function getPdoType($data)
+	{
+		static $typeMap = array( // php type => PDO type
+			'boolean' => \PDO::PARAM_BOOL,
+			'integer' => \PDO::PARAM_INT,
+			'string' => \PDO::PARAM_STR,
+			'resource' => \PDO::PARAM_LOB,
+			'NULL' => \PDO::PARAM_NULL,
+		);
+		$type = gettype($data);
+		return isset($typeMap[$type]) ? $typeMap[$type] : \PDO::PARAM_STR;
+	}
+
+	/**
 	 * Executes the SQL statement.
 	 * This method should only be used for executing non-query SQL statement, such as `INSERT`, `DELETE`, `UPDATE` SQLs.
 	 * No result set will be returned.
diff --git a/framework/yii/db/Schema.php b/framework/yii/db/Schema.php
index 396e944..1d86616 100644
--- a/framework/yii/db/Schema.php
+++ b/framework/yii/db/Schema.php
@@ -377,23 +377,4 @@ abstract class Schema extends Object
 			return 'string';
 		}
 	}
-
-	/**
-	 * Determines the PDO type for the give PHP data value.
-	 * @param mixed $data the data whose PDO type is to be determined
-	 * @return integer the PDO type
-	 * @see http://www.php.net/manual/en/pdo.constants.php
-	 */
-	public function getPdoType($data)
-	{
-		static $typeMap = array( // php type => PDO type
-			'boolean' => \PDO::PARAM_BOOL,
-			'integer' => \PDO::PARAM_INT,
-			'string' => \PDO::PARAM_STR,
-			'resource' => \PDO::PARAM_LOB,
-			'NULL' => \PDO::PARAM_NULL,
-		);
-		$type = gettype($data);
-		return isset($typeMap[$type]) ? $typeMap[$type] : \PDO::PARAM_STR;
-	}
 }
diff --git a/framework/yii/db/cubrid/Schema.php b/framework/yii/db/cubrid/Schema.php
index 99624f6..ba7fcae 100644
--- a/framework/yii/db/cubrid/Schema.php
+++ b/framework/yii/db/cubrid/Schema.php
@@ -237,23 +237,4 @@ class Schema extends \yii\db\Schema
 		}
 		return $tableNames;
 	}
-
-	/**
-	 * Determines the PDO type for the give PHP data value.
-	 * @param mixed $data the data whose PDO type is to be determined
-	 * @return integer the PDO type
-	 * @see http://www.php.net/manual/en/pdo.constants.php
-	 */
-	public function getPdoType($data)
-	{
-		static $typeMap = array(
-			'boolean' => \PDO::PARAM_INT, // CUBRID PDO does not support PARAM_BOOL
-			'integer' => \PDO::PARAM_INT,
-			'string' => \PDO::PARAM_STR,
-			'resource' => \PDO::PARAM_LOB,
-			'NULL' => \PDO::PARAM_NULL,
-		);
-		$type = gettype($data);
-		return isset($typeMap[$type]) ? $typeMap[$type] : \PDO::PARAM_STR;
-	}
 }
diff --git a/tests/unit/data/cubrid.sql b/tests/unit/data/cubrid.sql
index bfaf85c..3dcfa37 100644
--- a/tests/unit/data/cubrid.sql
+++ b/tests/unit/data/cubrid.sql
@@ -72,9 +72,7 @@ CREATE TABLE `tbl_type` (
   `float_col2` double DEFAULT '1.23',
   `blob_col` blob,
   `numeric_col` decimal(5,2) DEFAULT '33.22',
-  `time` timestamp NOT NULL DEFAULT '2002-01-01 00:00:00',
-  `bool_col` smallint NOT NULL,
-  `bool_col2` smallint DEFAULT 1
+  `time` timestamp NOT NULL DEFAULT '2002-01-01 00:00:00'
 );
 
 CREATE TABLE `tbl_composite_fk` (
diff --git a/tests/unit/framework/db/CommandTest.php b/tests/unit/framework/db/CommandTest.php
index 7b16c76..d9eb0e7 100644
--- a/tests/unit/framework/db/CommandTest.php
+++ b/tests/unit/framework/db/CommandTest.php
@@ -219,6 +219,29 @@ class CommandTest extends DatabaseTestCase
 		$this->assertTrue(is_array($result) && isset($result[0]));
 	}
 
+	// getPDOType is currently private
+//	public function testGetPDOType()
+//	{
+//		$values = array(
+//			array(null, \PDO::PARAM_NULL),
+//			array('', \PDO::PARAM_STR),
+//			array('hello', \PDO::PARAM_STR),
+//			array(0, \PDO::PARAM_INT),
+//			array(1, \PDO::PARAM_INT),
+//			array(1337, \PDO::PARAM_INT),
+//			array(true, \PDO::PARAM_BOOL),
+//			array(false, \PDO::PARAM_BOOL),
+//			array($fp=fopen(__FILE__, 'rb'), \PDO::PARAM_LOB),
+//		);
+//
+//		$command = $this->getConnection()->createCommand();
+//
+//		foreach($values as $value) {
+//			$this->assertEquals($value[1], $command->getPdoType($value[0]));
+//		}
+//		fclose($fp);
+//	}
+
 	public function testInsert()
 	{
 	}
diff --git a/tests/unit/framework/db/SchemaTest.php b/tests/unit/framework/db/SchemaTest.php
index dce6e20..2a3015d 100644
--- a/tests/unit/framework/db/SchemaTest.php
+++ b/tests/unit/framework/db/SchemaTest.php
@@ -11,29 +11,6 @@ use yii\db\Schema;
  */
 class SchemaTest extends DatabaseTestCase
 {
-
-	public function testGetPDOType()
-	{
-		$values = array(
-			array(null, \PDO::PARAM_NULL),
-			array('', \PDO::PARAM_STR),
-			array('hello', \PDO::PARAM_STR),
-			array(0, \PDO::PARAM_INT),
-			array(1, \PDO::PARAM_INT),
-			array(1337, \PDO::PARAM_INT),
-			array(true, \PDO::PARAM_BOOL),
-			array(false, \PDO::PARAM_BOOL),
-			array($fp=fopen(__FILE__, 'rb'), \PDO::PARAM_LOB),
-		);
-
-		$schema = $this->getConnection()->schema;
-
-		foreach($values as $value) {
-			$this->assertEquals($value[1], $schema->getPdoType($value[0]));
-		}
-		fclose($fp);
-	}
-
 	public function testFindTableNames()
 	{
 		/** @var Schema $schema */
diff --git a/tests/unit/framework/db/cubrid/CubridActiveRecordTest.php b/tests/unit/framework/db/cubrid/CubridActiveRecordTest.php
index dd48f44..2d2db15 100644
--- a/tests/unit/framework/db/cubrid/CubridActiveRecordTest.php
+++ b/tests/unit/framework/db/cubrid/CubridActiveRecordTest.php
@@ -1,6 +1,7 @@
 <?php
 namespace yiiunit\framework\db\cubrid;
 
+use yiiunit\data\ar\Customer;
 use yiiunit\framework\db\ActiveRecordTest;
 
 /**
@@ -10,4 +11,26 @@ use yiiunit\framework\db\ActiveRecordTest;
 class CubridActiveRecordTest extends ActiveRecordTest
 {
 	public $driverName = 'cubrid';
+
+	/**
+	 * cubrid PDO does not support boolean values.
+	 * Make sure this does not affect AR layer.
+	 */
+	public function testBooleanAttribute()
+	{
+		$customer = new Customer();
+		$customer->name = 'boolean customer';
+		$customer->email = 'mail@example.com';
+		$customer->status = true;
+		$customer->save(false);
+
+		$customer->refresh();
+		$this->assertEquals(1, $customer->status);
+
+		$customer->status = false;
+		$customer->save(false);
+
+		$customer->refresh();
+		$this->assertEquals(0, $customer->status);
+	}
 }
diff --git a/tests/unit/framework/db/cubrid/CubridCommandTest.php b/tests/unit/framework/db/cubrid/CubridCommandTest.php
index 895f548..45d3c1c 100644
--- a/tests/unit/framework/db/cubrid/CubridCommandTest.php
+++ b/tests/unit/framework/db/cubrid/CubridCommandTest.php
@@ -31,7 +31,7 @@ class CubridCommandTest extends CommandTest
 		$command->bindParam(':email', $email);
 		$this->assertEquals($name, $command->queryScalar());
 
-		$sql = "INSERT INTO tbl_type (int_col, char_col, char_col2, enum_col, float_col, blob_col, numeric_col, bool_col, bool_col2) VALUES (:int_col, '', :char_col, :enum_col, :float_col, CHAR_TO_BLOB(:blob_col), :numeric_col, :bool_col, :bool_col2)";
+		$sql = "INSERT INTO tbl_type (int_col, char_col, char_col2, enum_col, float_col, blob_col, numeric_col) VALUES (:int_col, '', :char_col, :enum_col, :float_col, CHAR_TO_BLOB(:blob_col), :numeric_col)";
 		$command = $db->createCommand($sql);
 		$intCol = 123;
 		$charCol = 'abc';
@@ -39,16 +39,12 @@ class CubridCommandTest extends CommandTest
 		$floatCol = 1.23;
 		$blobCol = "\x10\x11\x12";
 		$numericCol = '1.23';
-		$boolCol = false;
-		$boolCol2 = true;
 		$command->bindParam(':int_col', $intCol);
 		$command->bindParam(':char_col', $charCol);
 		$command->bindParam(':enum_col', $enumCol);
 		$command->bindParam(':float_col', $floatCol);
 		$command->bindParam(':blob_col', $blobCol);
 		$command->bindParam(':numeric_col', $numericCol);
-		$command->bindParam(':bool_col', $boolCol);
-		$command->bindParam(':bool_col2', $boolCol2);
 		$this->assertEquals(1, $command->execute());
 
 		$sql = 'SELECT * FROM tbl_type';
@@ -59,8 +55,6 @@ class CubridCommandTest extends CommandTest
 		$this->assertEquals($floatCol, $row['float_col']);
 		$this->assertEquals($blobCol, fread($row['blob_col'], 3));
 		$this->assertEquals($numericCol, $row['numeric_col']);
-		$this->assertEquals($boolCol, $row['bool_col']);
-		$this->assertEquals($boolCol2, $row['bool_col2']);
 
 		// bindValue
 		$sql = 'INSERT INTO tbl_customer(email, name, address) VALUES (:email, \'user5\', \'address5\')';
diff --git a/tests/unit/framework/db/cubrid/CubridSchemaTest.php b/tests/unit/framework/db/cubrid/CubridSchemaTest.php
index 6a1f6a2..9a0c139 100644
--- a/tests/unit/framework/db/cubrid/CubridSchemaTest.php
+++ b/tests/unit/framework/db/cubrid/CubridSchemaTest.php
@@ -10,26 +10,4 @@ use yiiunit\framework\db\SchemaTest;
 class CubridSchemaTest extends SchemaTest
 {
 	public $driverName = 'cubrid';
-
-	public function testGetPDOType()
-	{
-		$values = array(
-			null => \PDO::PARAM_NULL,
-			'' => \PDO::PARAM_STR,
-			'hello' => \PDO::PARAM_STR,
-			0 => \PDO::PARAM_INT,
-			1 => \PDO::PARAM_INT,
-			1337 => \PDO::PARAM_INT,
-			true => \PDO::PARAM_INT, // CUBRID PDO does not support PARAM_BOOL
-			false => \PDO::PARAM_INT, // CUBRID PDO does not support PARAM_BOOL
-		);
-
-		$schema = $this->getConnection()->schema;
-
-		foreach($values as $value => $type) {
-			$this->assertEquals($type, $schema->getPdoType($value));
-		}
-		$this->assertEquals(\PDO::PARAM_LOB, $schema->getPdoType($fp=fopen(__FILE__, 'rb')));
-		fclose($fp);
-	}
 }