diff --git a/Driver/PDODblib/Connection.php b/Driver/PDODblib/Connection.php
index 32b83a1..6c0af25 100644
--- a/Driver/PDODblib/Connection.php
+++ b/Driver/PDODblib/Connection.php
@@ -33,7 +33,7 @@ class Connection extends \Doctrine\DBAL\Driver\PDOConnection implements DriverCo
      */
     public function rollback()
     {
-        $this->exec('ROLLBACK TRANSACTION');
+//        $this->exec('ROLLBACK TRANSACTION');
     }
 
     /**
diff --git a/Platforms/DblibPlatform.php b/Platforms/DblibPlatform.php
index 7a9860d..8ddad4c 100644
--- a/Platforms/DblibPlatform.php
+++ b/Platforms/DblibPlatform.php
@@ -26,6 +26,7 @@
 
 use Doctrine\DBAL\Platforms\AbstractPlatform;
 use Doctrine\DBAL\Platforms\SQLServerPlatform;
+use Doctrine\DBAL\Schema\Index;
 
 /**
  * The DblibPlatform provides the behavior, features and SQL dialect of the
@@ -133,17 +134,28 @@ protected function initializeDoctrineTypeMappings()
         parent::initializeDoctrineTypeMappings();
 
         // add uniqueidentifier
+        //$this->doctrineTypeMapping['timestamp'] = 'date';
         $this->doctrineTypeMapping['uniqueidentifier'] = 'uniqueidentifier';
     }
 
+    public function getTimestampTypeDeclarationSQL(array $fieldDeclaration)
+    {
+        return "TIMESTAMP";
+    }
+    
     /**
      * @override
      */
     public function getDateTimeFormatString()
     {
-        return 'Y-m-d H:i:s.u';
+        return 'F d Y H:i:s:000A';
     }
 
+    public function getTimestampFormatString()
+    {
+        return 'Y-m-d H:i:s';
+    }
+    
     /**
      * @override
      * @return bool
@@ -152,4 +164,26 @@ public function supportsLimitOffset()
     {
         return true;
     }
+    
+    public function getCreateIndexSQL(Index $index, $table)
+    {
+        if ($table instanceof Table) {
+            $table = $table->getQuotedName($this);
+        }
+        $name = $index->getQuotedName($this);
+        $columns = $index->getColumns();
+
+        if (count($columns) == 0) {
+            throw new \InvalidArgumentException("Incomplete definition. 'columns' required.");
+        }
+
+        if ($index->isPrimary()) {
+            return $this->getCreatePrimaryKeySQL($index, $table);
+        }
+
+        $query = 'CREATE ' . $this->getCreateIndexSQLFlags($index) . 'INDEX ' . $name . ' ON ' . $table;
+        $query .= ' (' . $this->getIndexFieldDeclarationListSQL($columns) . ')';
+
+        return $query;
+    }
 }
diff --git a/Schema/DblibSchemaManager.php b/Schema/DblibSchemaManager.php
index 3e601d2..97d5f55 100644
--- a/Schema/DblibSchemaManager.php
+++ b/Schema/DblibSchemaManager.php
@@ -29,21 +29,23 @@ protected function _getPortableTableForeignKeysList($tableForeignKeys)
         $list = array();
         foreach ($tableForeignKeys as $key => $value) {
             $value = \array_change_key_case($value, CASE_LOWER);
-            if (!isset($list[$value['constraint_name']])) {
-                if ($value['delete_rule'] == "NO ACTION") {
-                    $value['delete_rule'] = null;
+            if(array_key_exists('constraint_name', $value)){
+                if (!isset($list[$value['constraint_name']])) {
+                    if ($value['delete_rule'] == "NO ACTION") {
+                        $value['delete_rule'] = null;
+                    }
+
+                    $list[$value['pkconstraint_name']] = array(
+                        'name' => $value['pkconstraint_name'],
+                        'local' => array(),
+                        'foreign' => array(),
+                        'foreignTable' => $value['fktable_name'],
+                        'onDelete' => $value['delete_rule'],
+                    );
                 }
-
-                $list[$value['pkconstraint_name']] = array(
-                    'name' => $value['pkconstraint_name'],
-                    'local' => array(),
-                    'foreign' => array(),
-                    'foreignTable' => $value['fktable_name'],
-                    'onDelete' => $value['delete_rule'],
-                );
+                $list[$value['pkconstraint_name']]['local'][$value['deferrability']] = $value['pkcolumn_name'];
+                $list[$value['pkconstraint_name']]['foreign'][$value['deferrability']] = $value['fkcolumn_name'];
             }
-            $list[$value['pkconstraint_name']]['local'][$value['deferrability']] = $value['pkcolumn_name'];
-            $list[$value['pkconstraint_name']]['foreign'][$value['deferrability']] = $value['fkcolumn_name'];
         }
 
         $result = array();
diff --git a/Types/TimestampType.php b/Types/TimestampType.php
new file mode 100644
index 0000000..da26496
--- /dev/null
+++ b/Types/TimestampType.php
@@ -0,0 +1,69 @@
+<?php
+/*
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This software consists of voluntary contributions made by many individuals
+ * and is licensed under the LGPL. For more information, see
+ * <http://www.doctrine-project.org>.
+ */
+
+namespace Realestate\MssqlBundle\Types;
+
+use Doctrine\DBAL\Platforms\AbstractPlatform;
+use Doctrine\DBAL\Types\Type;
+
+/**
+ * Type that maps an SQL TIME to a PHP DateTime object.
+ *
+ * @since 2.0
+ */
+class TimestampType extends Type
+{
+    public function getName()
+    {
+        return 'timestamp';
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getSQLDeclaration(array $fieldDeclaration, AbstractPlatform $platform)
+    {
+        return $platform->getTimestampTypeDeclarationSQL($fieldDeclaration);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function convertToDatabaseValue($value, AbstractPlatform $platform)
+    {
+        return ($value !== null)
+            ? $value->format($platform->getTimestampFormatString()) : null;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function convertToPHPValue($value, AbstractPlatform $platform)
+    {
+        if ($value === null) {
+            return null;
+        }
+
+        $val = \Realestate\MssqlBundle\Types\RealestateDateTime::createFromFormat($platform->getTimestampFormatString(), $value);
+        if (!$val) {
+            throw ConversionException::conversionFailedFormat($value, $this->getName(), $platform->getTimestampFormatString());
+        }
+        return $val;
+    }
+}
\ No newline at end of file