diff --git a/library/Zend/Db/Adapter/AdapterAwareInterface.php b/library/Zend/Db/Adapter/AdapterAwareInterface.php
index 3f948876709..7d4e63c6737 100644
--- a/library/Zend/Db/Adapter/AdapterAwareInterface.php
+++ b/library/Zend/Db/Adapter/AdapterAwareInterface.php
@@ -17,5 +17,11 @@
  */
 interface AdapterAwareInterface
 {
+    /**
+     * Set db adapter
+     *
+     * @param Adapter $adapter
+     * @return AdapterAwareInterface
+     */
     public function setDbAdapter(Adapter $adapter);
 }
diff --git a/library/Zend/Db/Adapter/AdapterServiceFactory.php b/library/Zend/Db/Adapter/AdapterServiceFactory.php
index 492a8df53c8..2ddc0cc5121 100644
--- a/library/Zend/Db/Adapter/AdapterServiceFactory.php
+++ b/library/Zend/Db/Adapter/AdapterServiceFactory.php
@@ -20,6 +20,12 @@
  */
 class AdapterServiceFactory implements FactoryInterface
 {
+    /**
+     * Create db adapter service
+     *
+     * @param ServiceLocatorInterface $serviceLocator
+     * @return Adapter
+     */
     public function createService(ServiceLocatorInterface $serviceLocator)
     {
         $config = $serviceLocator->get('Configuration');
diff --git a/library/Zend/Db/Adapter/Driver/ConnectionInterface.php b/library/Zend/Db/Adapter/Driver/ConnectionInterface.php
index 6c7f967a581..b6acd91d24e 100644
--- a/library/Zend/Db/Adapter/Driver/ConnectionInterface.php
+++ b/library/Zend/Db/Adapter/Driver/ConnectionInterface.php
@@ -17,14 +17,75 @@
  */
 interface ConnectionInterface
 {
+    /**
+     * Get current schema
+     *
+     * @return string
+     */
     public function getCurrentSchema();
+
+    /**
+     * Get resource
+     *
+     * @return mixed
+     */
     public function getResource();
+
+    /**
+     * Connect
+     *
+     * @return ConnectionInterface
+     */
     public function connect();
+
+    /**
+     * Is connected
+     *
+     * @return bool
+     */
     public function isConnected();
+
+    /**
+     * Disconnect
+     *
+     * @return ConnectionInterface
+     */
     public function disconnect();
+
+    /**
+     * Begin transaction
+     *
+     * @return ConnectionInterface
+     */
     public function beginTransaction();
+
+    /**
+     * Commit
+     *
+     * @return ConnectionInterface
+     */
     public function commit();
+
+    /**
+     * Rollback
+     *
+     * @return ConnectionInterface
+     */
     public function rollback();
-    public function execute($sql); // return result set
+
+    /**
+     * Execute
+     *
+     * @param  string $sql
+     * @return ResultInterface
+     */
+    public function execute($sql);
+
+    /**
+     * Get last generated id
+     *
+     * @param  null $name Ignored
+     * @return integer
+     */
     public function getLastGeneratedValue($name = null);
 }
diff --git a/library/Zend/Db/Adapter/Driver/DriverInterface.php b/library/Zend/Db/Adapter/Driver/DriverInterface.php
index c99ef8d9208..6da579647d2 100644
--- a/library/Zend/Db/Adapter/Driver/DriverInterface.php
+++ b/library/Zend/Db/Adapter/Driver/DriverInterface.php
@@ -23,39 +23,53 @@ interface DriverInterface
     const NAME_FORMAT_NATURAL = 'natural';
 
     /**
+     * Get database platform name
+     *
      * @param string $nameFormat
      * @return string
      */
     public function getDatabasePlatformName($nameFormat = self::NAME_FORMAT_CAMELCASE);
 
     /**
+     * Check environment
+     *
      * @return bool
      */
     public function checkEnvironment();
 
     /**
+     * Get connection
+     *
      * @return ConnectionInterface
      */
     public function getConnection();
 
     /**
+     * Create statement
+     *
      * @param string|resource $sqlOrResource
      * @return StatementInterface
      */
     public function createStatement($sqlOrResource = null);
 
     /**
+     * Create result
+     *
      * @param resource $resource
      * @return ResultInterface
      */
     public function createResult($resource);
 
     /**
+     * Get prepare type
+     *
      * @return array
      */
     public function getPrepareType();
 
     /**
+     * Format parameter name
+     *
      * @param string $name
      * @param mixed  $type
      * @return string
@@ -63,6 +77,8 @@ public function getPrepareType();
     public function formatParameterName($name, $type = null);
 
     /**
+     * Get last generated value
+     *
      * @return mixed
      */
     public function getLastGeneratedValue();
diff --git a/library/Zend/Db/Adapter/Driver/Feature/AbstractFeature.php b/library/Zend/Db/Adapter/Driver/Feature/AbstractFeature.php
index 9ec00ffc318..ac6c506cb6d 100644
--- a/library/Zend/Db/Adapter/Driver/Feature/AbstractFeature.php
+++ b/library/Zend/Db/Adapter/Driver/Feature/AbstractFeature.php
@@ -26,13 +26,21 @@ abstract class AbstractFeature
     protected $driver = null;
 
     /**
+     * Set driver
+     *
      * @param DriverInterface $driver
+     * @return void
      */
     public function setDriver(DriverInterface $driver)
     {
         $this->driver = $driver;
     }
 
+    /**
+     * Get name
+     *
+     * @return string
+     */
     abstract public function getName();
 
 }
diff --git a/library/Zend/Db/Adapter/Driver/Feature/DriverFeatureInterface.php b/library/Zend/Db/Adapter/Driver/Feature/DriverFeatureInterface.php
index 0c9be962577..39d185c66b5 100644
--- a/library/Zend/Db/Adapter/Driver/Feature/DriverFeatureInterface.php
+++ b/library/Zend/Db/Adapter/Driver/Feature/DriverFeatureInterface.php
@@ -17,7 +17,27 @@
  */
 interface DriverFeatureInterface
 {
+    /**
+     * Setup the default features for Pdo
+     *
+     * @return DriverFeatureInterface
+     */
     public function setupDefaultFeatures();
+
+    /**
+     * Add feature
+     *
+     * @param string $name
+     * @param mixed $feature
+     * @return DriverFeatureInterface
+     */
     public function addFeature($name, $feature);
+
+    /**
+     * Get feature
+     *
+     * @param $name
+     * @return mixed|false
+     */
     public function getFeature($name);
 }
diff --git a/library/Zend/Db/Adapter/Driver/Mysqli/Connection.php b/library/Zend/Db/Adapter/Driver/Mysqli/Connection.php
index 9cb2e24a9c8..a3c19cd8334 100644
--- a/library/Zend/Db/Adapter/Driver/Mysqli/Connection.php
+++ b/library/Zend/Db/Adapter/Driver/Mysqli/Connection.php
@@ -138,7 +138,7 @@ public function getResource()
      * Connect
      *
      * @throws Exception\RuntimeException
-     * @return null
+     * @return void
      */
     public function connect()
     {
@@ -156,7 +156,7 @@ public function connect()
                     return $p[$name];
                 }
             }
-            return null;
+            return;
         };
 
         $hostname = $findParameterValue(array('hostname', 'host'));
@@ -185,7 +185,7 @@ public function connect()
     /**
      * Is connected
      *
-     * @return boolean
+     * @return bool
      */
     public function isConnected()
     {
@@ -194,6 +194,8 @@ public function isConnected()
 
     /**
      * Disconnect
+     *
+     * @return void
      */
     public function disconnect()
     {
@@ -205,6 +207,8 @@ public function disconnect()
 
     /**
      * Begin transaction
+     *
+     * @return void
      */
     public function beginTransaction()
     {
@@ -218,6 +222,8 @@ public function beginTransaction()
 
     /**
      * Commit
+     *
+     * @return void
      */
     public function commit()
     {
diff --git a/library/Zend/Db/Adapter/Driver/Mysqli/Mysqli.php b/library/Zend/Db/Adapter/Driver/Mysqli/Mysqli.php
index 5af8020ae40..e86a3c05743 100644
--- a/library/Zend/Db/Adapter/Driver/Mysqli/Mysqli.php
+++ b/library/Zend/Db/Adapter/Driver/Mysqli/Mysqli.php
@@ -45,6 +45,8 @@ class Mysqli implements DriverInterface
     );
 
     /**
+     * Constructor
+     *
      * @param array|Connection|\mysqli $connection
      * @param null|Statement $statementPrototype
      * @param null|Result $resultPrototype
@@ -88,6 +90,8 @@ public function registerStatementPrototype(Statement $statementPrototype)
     }
 
     /**
+     * Get statement prototype
+     *
      * @return null|Statement
      */
     public function getStatementPrototype()
@@ -130,6 +134,9 @@ public function getDatabasePlatformName($nameFormat = self::NAME_FORMAT_CAMELCAS
 
     /**
      * Check environment
+     *
+     * @throws Exception\RuntimeException
+     * @return void
      */
     public function checkEnvironment()
     {
@@ -139,6 +146,8 @@ public function checkEnvironment()
     }
 
     /**
+     * Get connection
+     *
      * @return Connection
      */
     public function getConnection()
@@ -147,6 +156,8 @@ public function getConnection()
     }
 
     /**
+     * Create statement
+     *
      * @param string $sqlOrResource
      * @return Statement
      */
@@ -175,6 +186,8 @@ public function createStatement($sqlOrResource = null)
     }
 
     /**
+     * Create result
+     *
      * @param resource $resource
      * @param null|bool $isBuffered
      * @return Result
@@ -187,6 +200,8 @@ public function createResult($resource, $isBuffered = null)
     }
 
     /**
+     * Get prepare type
+     *
      * @return array
      */
     public function getPrepareType()
@@ -195,6 +210,8 @@ public function getPrepareType()
     }
 
     /**
+     * Format parameter name
+     *
      * @param string $name
      * @param mixed  $type
      * @return string
@@ -205,6 +222,8 @@ public function formatParameterName($name, $type = null)
     }
 
     /**
+     * Get last generated value
+     *
      * @return mixed
      */
     public function getLastGeneratedValue()
diff --git a/library/Zend/Db/Adapter/Driver/Mysqli/Result.php b/library/Zend/Db/Adapter/Driver/Mysqli/Result.php
index ab81db1f442..8f17a65ffe6 100644
--- a/library/Zend/Db/Adapter/Driver/Mysqli/Result.php
+++ b/library/Zend/Db/Adapter/Driver/Mysqli/Result.php
@@ -10,6 +10,7 @@
 
 namespace Zend\Db\Adapter\Driver\Mysqli;
 
+use Iterator;
 use Zend\Db\Adapter\Driver\ResultInterface;
 use Zend\Db\Adapter\Exception;
 
@@ -18,7 +19,9 @@
  * @package    Zend_Db
  * @subpackage Adapter
  */
-class Result implements \Iterator, ResultInterface
+class Result implements
+    Iterator,
+    ResultInterface
 {
 
     /**
@@ -101,6 +104,7 @@ public function initialize($resource, $generatedValue, $isBuffered = null)
 
     /**
      * Force buffering
+     *
      * @throws Exception\RuntimeException
      */
     public function buffer()
@@ -115,6 +119,8 @@ public function buffer()
     }
 
     /**
+     * Check if is buffered
+     *
      * @return bool|null
      */
     public function isBuffered()
@@ -124,6 +130,7 @@ public function isBuffered()
 
     /**
      * Return the resource
+     *
      * @return mixed
      */
     public function getResource()
@@ -143,6 +150,7 @@ public function isQueryResult()
 
     /**
      * Get affected rows
+     *
      * @return integer
      */
     public function getAffectedRows()
@@ -156,6 +164,7 @@ public function getAffectedRows()
 
     /**
      * Current
+     *
      * @return mixed
      */
     public function current()
@@ -243,6 +252,8 @@ protected function loadFromMysqliResult()
 
     /**
      * Next
+     *
+     * @return void
      */
     public function next()
     {
@@ -257,6 +268,7 @@ public function next()
 
     /**
      * Key
+     *
      * @return mixed
      */
     public function key()
@@ -266,6 +278,8 @@ public function key()
 
     /**
      * Rewind
+     *
+     * @return void
      */
     public function rewind()
     {
@@ -281,6 +295,7 @@ public function rewind()
 
     /**
      * Valid
+     *
      * @return boolean
      */
     public function valid()
@@ -311,7 +326,9 @@ public function count()
     }
 
     /**
-     * @return int
+     * Get field count
+     *
+     * @return integer
      */
     public function getFieldCount()
     {
@@ -319,6 +336,8 @@ public function getFieldCount()
     }
 
     /**
+     * Get generated value
+     *
      * @return mixed|null
      */
     public function getGeneratedValue()
diff --git a/library/Zend/Db/Adapter/Driver/Mysqli/Statement.php b/library/Zend/Db/Adapter/Driver/Mysqli/Statement.php
index 14236c63e7f..59caf229048 100644
--- a/library/Zend/Db/Adapter/Driver/Mysqli/Statement.php
+++ b/library/Zend/Db/Adapter/Driver/Mysqli/Statement.php
@@ -151,6 +151,8 @@ public function getSql()
     }
 
     /**
+     * Get parameter count
+     *
      * @return ParameterContainer
      */
     public function getParameterContainer()
@@ -159,6 +161,8 @@ public function getParameterContainer()
     }
 
     /**
+     * Is prepared
+     *
      * @return bool
      */
     public function isPrepared()
@@ -167,6 +171,8 @@ public function isPrepared()
     }
 
     /**
+     * Prepare
+     *
      * @param string $sql
      * @throws Exception\InvalidQueryException
      * @throws Exception\RuntimeException
@@ -243,6 +249,8 @@ public function execute($parameters = null)
 
     /**
      * Bind parameters from container
+     *
+     * @return void
      */
     protected function bindParametersFromContainer()
     {
diff --git a/library/Zend/Db/Adapter/Driver/Pdo/Connection.php b/library/Zend/Db/Adapter/Driver/Pdo/Connection.php
index 76019a182bb..33f0ba0fcab 100644
--- a/library/Zend/Db/Adapter/Driver/Pdo/Connection.php
+++ b/library/Zend/Db/Adapter/Driver/Pdo/Connection.php
@@ -47,8 +47,10 @@ class Connection implements ConnectionInterface
     protected $inTransaction = false;
 
     /**
+     * Constructor
+     *
      * @param array|\PDO|null $connectionParameters
-     * @throws \Zend\Db\Adapter\Exception\InvalidArgumentException
+     * @throws Exception\InvalidArgumentException
      */
     public function __construct($connectionParameters = null)
     {
@@ -62,6 +64,8 @@ public function __construct($connectionParameters = null)
     }
 
     /**
+     * Set driver
+     *
      * @param Pdo $driver
      * @return Connection
      */
@@ -72,6 +76,8 @@ public function setDriver(Pdo $driver)
     }
 
     /**
+     * Get driver name
+     *
      * @return null|string
      */
     public function getDriverName()
@@ -80,7 +86,10 @@ public function getDriverName()
     }
 
     /**
+     * Set connection parameters
+     *
      * @param array $connectionParameters
+     * @return void
      */
     public function setConnectionParameters(array $connectionParameters)
     {
@@ -100,6 +109,8 @@ public function setConnectionParameters(array $connectionParameters)
     }
 
     /**
+     * Get connection parameters
+     *
      * @return array
      */
     public function getConnectionParameters()
@@ -152,6 +163,8 @@ public function setResource(\PDO $resource)
     }
 
     /**
+     * Get resource
+     *
      * @return \PDO
      */
     public function getResource()
@@ -160,8 +173,11 @@ public function getResource()
     }
 
     /**
+     * Connect
+     *
      * @return Connection
-     * @throws \Exception
+     * @throws Exception\InvalidConnectionParametersException
+     * @throws Exception\RuntimeException
      */
     public function connect()
     {
@@ -247,6 +263,8 @@ public function connect()
     }
 
     /**
+     * Is connected
+     *
      * @return bool
      */
     public function isConnected()
@@ -255,6 +273,8 @@ public function isConnected()
     }
 
     /**
+     * Disconnect
+     *
      * @return Connection
      */
     public function disconnect()
@@ -266,6 +286,8 @@ public function disconnect()
     }
 
     /**
+     * Begin transaction
+     *
      * @return Connection
      */
     public function beginTransaction()
@@ -279,6 +301,8 @@ public function beginTransaction()
     }
 
     /**
+     * Commit
+     *
      * @return Connection
      */
     public function commit()
@@ -293,6 +317,8 @@ public function commit()
     }
 
     /**
+     * Rollback
+     *
      * @return Connection
      * @throws Exception\RuntimeException
      */
@@ -311,9 +337,11 @@ public function rollback()
     }
 
     /**
+     * Execute
+     *
      * @param $sql
      * @return Result
-     * @throws \Zend\Db\Adapter\Exception\InvalidQueryException
+     * @throws Exception\InvalidQueryException
      */
     public function execute($sql)
     {
@@ -334,6 +362,8 @@ public function execute($sql)
     }
 
     /**
+     * Prepare
+     *
      * @param string $sql
      * @return Statement
      */
diff --git a/library/Zend/Db/Adapter/Driver/Pdo/Pdo.php b/library/Zend/Db/Adapter/Driver/Pdo/Pdo.php
index 72d68f7eaaa..7b536c643c7 100644
--- a/library/Zend/Db/Adapter/Driver/Pdo/Pdo.php
+++ b/library/Zend/Db/Adapter/Driver/Pdo/Pdo.php
@@ -109,6 +109,8 @@ public function registerResultPrototype(Result $resultPrototype)
     }
 
     /**
+     * Add feature
+     *
      * @param string $name
      * @param AbstractFeature $feature
      * @return Pdo
@@ -124,7 +126,9 @@ public function addFeature($name, $feature)
     }
 
     /**
-     * setup the default features for Pdo
+     * Setup the default features for Pdo
+     *
+     * @return Pdo
      */
     public function setupDefaultFeatures()
     {
@@ -135,6 +139,8 @@ public function setupDefaultFeatures()
     }
 
     /**
+     * Get feature
+     *
      * @param $name
      * @return AbstractFeature|false
      */
diff --git a/library/Zend/Db/Adapter/Driver/Pgsql/Connection.php b/library/Zend/Db/Adapter/Driver/Pgsql/Connection.php
index a48e79f376d..a734d707350 100644
--- a/library/Zend/Db/Adapter/Driver/Pgsql/Connection.php
+++ b/library/Zend/Db/Adapter/Driver/Pgsql/Connection.php
@@ -60,6 +60,8 @@ public function __construct($connectionInfo = null)
     }
 
     /**
+     * Set connection parameters
+     *
      * @param  array $connectionParameters
      * @return Connection
      */
@@ -70,6 +72,8 @@ public function setConnectionParameters(array $connectionParameters)
     }
 
     /**
+     * Set driver
+     *
      * @param  Pgsql $driver
      * @return Connection
      */
@@ -80,6 +84,8 @@ public function setDriver(Pgsql $driver)
     }
 
     /**
+     * Set resource
+     *
      * @param  resource $resource
      * @return Connection
      */
@@ -90,7 +96,9 @@ public function setResource($resource)
     }
 
     /**
-     * @return null
+     * Get current schema
+     *
+     * @return null|string
      */
     public function getCurrentSchema()
     {
@@ -106,6 +114,8 @@ public function getCurrentSchema()
     }
 
     /**
+     * Get resource
+     *
      * @return resource
      */
     public function getResource()
diff --git a/library/Zend/Db/Adapter/Driver/Pgsql/Pgsql.php b/library/Zend/Db/Adapter/Driver/Pgsql/Pgsql.php
index 50bc1304bfb..6fd42af56bf 100644
--- a/library/Zend/Db/Adapter/Driver/Pgsql/Pgsql.php
+++ b/library/Zend/Db/Adapter/Driver/Pgsql/Pgsql.php
@@ -43,6 +43,8 @@ class Pgsql implements DriverInterface
     );
 
     /**
+     * Constructor
+     *
      * @param array|Connection|resource $connection
      * @param null|Statement $statementPrototype
      * @param null|Result $resultPrototype
@@ -60,6 +62,8 @@ public function __construct($connection, Statement $statementPrototype = null, R
     }
 
     /**
+     * Register connection
+     *
      * @param Connection $connection
      * @return Pgsql
      */
@@ -71,6 +75,8 @@ public function registerConnection(Connection $connection)
     }
 
     /**
+     * Register statement prototype
+     *
      * @param Statement $statement
      * @return Pgsql
      */
@@ -82,6 +88,8 @@ public function registerStatementPrototype(Statement $statement)
     }
 
     /**
+     * Register result prototype
+     *
      * @param Result $result
      * @return Pgsql
      */
@@ -92,6 +100,8 @@ public function registerResultPrototype(Result $result)
     }
 
     /**
+     * Get database platform name
+     *
      * @param string $nameFormat
      * @return string
      */
@@ -105,6 +115,8 @@ public function getDatabasePlatformName($nameFormat = self::NAME_FORMAT_CAMELCAS
     }
 
     /**
+     * Check environment
+     *
      * @throws Exception\RuntimeException
      * @return bool
      */
@@ -116,6 +128,8 @@ public function checkEnvironment()
     }
 
     /**
+     * Get connection
+     *
      * @return Connection
      */
     public function getConnection()
@@ -124,6 +138,8 @@ public function getConnection()
     }
 
     /**
+     * Create statement
+     *
      * @param string|null $sqlOrResource
      * @return Statement
      */
@@ -150,6 +166,8 @@ public function createStatement($sqlOrResource = null)
     }
 
     /**
+     * Create result
+     *
      * @param resource $resource
      * @return Result
      */
@@ -161,6 +179,8 @@ public function createResult($resource)
     }
 
     /**
+     * Get prepare Type
+     *
      * @return array
      */
     public function getPrepareType()
@@ -169,6 +189,8 @@ public function getPrepareType()
     }
 
     /**
+     * Format parameter name
+     *
      * @param string $name
      * @param mixed  $type
      * @return string
@@ -179,6 +201,8 @@ public function formatParameterName($name, $type = null)
     }
 
     /**
+     * Get last generated value
+     *
      * @return mixed
      */
     public function getLastGeneratedValue()
diff --git a/library/Zend/Db/Adapter/Driver/Pgsql/Result.php b/library/Zend/Db/Adapter/Driver/Pgsql/Result.php
index f98544907e4..6a6f60c102d 100644
--- a/library/Zend/Db/Adapter/Driver/Pgsql/Result.php
+++ b/library/Zend/Db/Adapter/Driver/Pgsql/Result.php
@@ -11,6 +11,7 @@
 namespace Zend\Db\Adapter\Driver\Pgsql;
 
 use Zend\Db\Adapter\Driver\ResultInterface;
+use Zend\Db\Adapter\Exception;
 
 /**
  * @category   Zend
@@ -25,16 +26,33 @@ class Result implements ResultInterface
      */
     protected $resource = null;
 
+    /**
+     * @var int
+     */
     protected $position = 0;
 
+    /**
+     * @var int
+     */
     protected $count = 0;
 
+    /**
+     * @var null|mixed
+     */
     protected $generatedValue = null;
 
+    /**
+     * Initialize
+     *
+     * @param $resource
+     * @param $generatedValue
+     * @return void
+     * @throws Exception\InvalidArgumentException
+     */
     public function initialize($resource, $generatedValue)
     {
         if (!is_resource($resource) || get_resource_type($resource) != 'pgsql result') {
-            throw new \Exception('Resource not of the correct type.');
+            throw new Exception\InvalidArgumentException('Resource not of the correct type.');
         }
 
         $this->resource = $resource;
@@ -42,6 +60,11 @@ public function initialize($resource, $generatedValue)
         $this->generatedValue = $generatedValue;
     }
 
+    /**
+     * Current
+     *
+     * @return array|bool|mixed
+     */
     public function current()
     {
         if ($this->count === 0) {
@@ -50,57 +73,107 @@ public function current()
         return pg_fetch_assoc($this->resource, $this->position);
     }
 
+    /**
+     * Next
+     *
+     * @return void
+     */
     public function next()
     {
         $this->position++;
     }
 
+    /**
+     * Key
+     *
+     * @return int|mixed
+     */
     public function key()
     {
         return $this->position;
     }
 
+    /**
+     * Valid
+     *
+     * @return bool
+     */
     public function valid()
     {
         return ($this->position < $this->count);
     }
 
+    /**
+     * Rewind
+     *
+     * @return void
+     */
     public function rewind()
     {
         $this->position = 0;
     }
 
+    /**
+     * Buffer
+     *
+     * @return null
+     */
     public function buffer()
     {
         return null;
     }
 
+    /**
+     * Is buffered
+     *
+     * @return false
+     */
     public function isBuffered()
     {
         return false;
     }
 
+    /**
+     * Is query result
+     *
+     * @return bool
+     */
     public function isQueryResult()
     {
         return (pg_num_fields($this->resource) > 0);
     }
 
+    /**
+     * Get affected rows
+     *
+     * @return int
+     */
     public function getAffectedRows()
     {
         return pg_affected_rows($this->resource);
     }
 
+    /**
+     * Get generated value
+     *
+     * @return mixed|null
+     */
     public function getGeneratedValue()
     {
         return $this->generatedValue;
     }
 
+    /**
+     * Get resource
+     */
     public function getResource()
     {
         // TODO: Implement getResource() method.
     }
 
     /**
+     * Count
+     *
      * (PHP 5 &gt;= 5.1.0)<br/>
      * Count elements of an object
      * @link http://php.net/manual/en/countable.count.php
@@ -114,6 +187,11 @@ public function count()
         return $this->count;
     }
 
+    /**
+     * Get field count
+     *
+     * @return int
+     */
     public function getFieldCount()
     {
         return pg_num_fields($this->resource);
diff --git a/library/Zend/Db/Adapter/Driver/Pgsql/Statement.php b/library/Zend/Db/Adapter/Driver/Pgsql/Statement.php
index 2ff8e0b0196..6bef28dd29d 100644
--- a/library/Zend/Db/Adapter/Driver/Pgsql/Statement.php
+++ b/library/Zend/Db/Adapter/Driver/Pgsql/Statement.php
@@ -67,6 +67,8 @@ public function setDriver(Pgsql $driver)
     }
 
     /**
+     * Initialize
+     *
      * @param  resource $pgsql
      * @return void
      * @throws Exception\RuntimeException for invalid or missing postgresql connection
@@ -84,6 +86,8 @@ public function initialize($pgsql)
     }
 
     /**
+     * Get resource
+     *
      * @return resource
      */
     public function getResource()
@@ -92,6 +96,8 @@ public function getResource()
     }
 
     /**
+     * Set sql
+     *
      * @param string $sql
      * @return Statement
      */
@@ -102,6 +108,8 @@ public function setSql($sql)
     }
 
     /**
+     * Get sql
+     *
      * @return string
      */
     public function getSql()
@@ -110,6 +118,8 @@ public function getSql()
     }
 
     /**
+     * Set parameter container
+     *
      * @param ParameterContainer $parameterContainer
      * @return Statement
      */
@@ -120,6 +130,8 @@ public function setParameterContainer(ParameterContainer $parameterContainer)
     }
 
     /**
+     * Get parameter container
+     *
      * @return ParameterContainer
      */
     public function getParameterContainer()
@@ -128,6 +140,8 @@ public function getParameterContainer()
     }
 
     /**
+     * Prepare
+     *
      * @param string $sql
      */
     public function prepare($sql = null)
@@ -148,6 +162,8 @@ public function prepare($sql = null)
     }
 
     /**
+     * Is prepared
+     *
      * @return bool
      */
     public function isPrepared()
@@ -156,7 +172,9 @@ public function isPrepared()
     }
 
     /**
-     * @param  null $parameters
+     * Execute
+     *
+     * @param  ParameterContainer|null $parameters
      * @throws Exception\InvalidQueryException
      * @return Result
      */
diff --git a/library/Zend/Db/Adapter/Driver/ResultInterface.php b/library/Zend/Db/Adapter/Driver/ResultInterface.php
index e180fc441bd..b338d9ae8c3 100644
--- a/library/Zend/Db/Adapter/Driver/ResultInterface.php
+++ b/library/Zend/Db/Adapter/Driver/ResultInterface.php
@@ -10,18 +10,64 @@
 
 namespace Zend\Db\Adapter\Driver;
 
+use Countable;
+use Iterator;
+
 /**
  * @category   Zend
  * @package    Zend_Db
  * @subpackage Adapter
  */
-interface ResultInterface extends \Countable, \Iterator
+interface ResultInterface extends
+    Countable,
+    Iterator
 {
+    /**
+     * Force buffering
+     *
+     * @return void
+     */
     public function buffer();
+
+    /**
+     * Check if is buffered
+     *
+     * @return bool|null
+     */
     public function isBuffered();
+
+    /**
+     * Is query result?
+     *
+     * @return bool
+     */
     public function isQueryResult();
+
+    /**
+     * Get affected rows
+     *
+     * @return integer
+     */
     public function getAffectedRows();
+
+    /**
+     * Get generated value
+     *
+     * @return mixed|null
+     */
     public function getGeneratedValue();
+
+    /**
+     * Get the resource
+     *
+     * @return mixed
+     */
     public function getResource();
+
+    /**
+     * Get field count
+     *
+     * @return integer
+     */
     public function getFieldCount();
 }
diff --git a/library/Zend/Db/Adapter/Driver/StatementInterface.php b/library/Zend/Db/Adapter/Driver/StatementInterface.php
index e4d151ce513..63461ac89d9 100644
--- a/library/Zend/Db/Adapter/Driver/StatementInterface.php
+++ b/library/Zend/Db/Adapter/Driver/StatementInterface.php
@@ -22,24 +22,29 @@ interface StatementInterface extends StatementContainerInterface
 {
 
     /**
+     * Get resource
+     *
      * @return resource
      */
     public function getResource();
 
     /**
-     * @abstract
+     * Prepare sql
+     *
      * @param string $sql
      */
     public function prepare($sql = null);
 
     /**
-     * @abstract
+     * Check if is prepared
+     *
      * @return bool
      */
     public function isPrepared();
 
     /**
-     * @abstract
+     * Execute
+     *
      * @param null $parameters
      * @return ResultInterface
      */
diff --git a/library/Zend/Db/Adapter/Platform/PlatformInterface.php b/library/Zend/Db/Adapter/Platform/PlatformInterface.php
index 0b2851a07ba..fa5bd7b115e 100644
--- a/library/Zend/Db/Adapter/Platform/PlatformInterface.php
+++ b/library/Zend/Db/Adapter/Platform/PlatformInterface.php
@@ -17,13 +17,72 @@
  */
 interface PlatformInterface
 {
+    /**
+     * Get name
+     *
+     * @return string
+     */
     public function getName();
+
+    /**
+     * Get quote identifier symbol
+     *
+     * @return string
+     */
     public function getQuoteIdentifierSymbol();
+
+    /**
+     * Quote identifier
+     *
+     * @param  string $identifier
+     * @return string
+     */
     public function quoteIdentifier($identifier);
+
+    /**
+     * Quote identifier chain
+     *
+     * @param string|string[] $identifierChain
+     * @return string
+     */
     public function quoteIdentifierChain($identifierChain);
+
+    /**
+     * Get quote value symbol
+     *
+     * @return string
+     */
     public function getQuoteValueSymbol();
+
+    /**
+     * Quote value
+     *
+     * @param  string $value
+     * @return string
+     */
     public function quoteValue($value);
+
+    /**
+     * Quote value list
+     *
+     * @param string|string[] $valueList
+     * @return string
+     */
     public function quoteValueList($valueList);
+
+    /**
+     * Get identifier separator
+     *
+     * @return string
+     */
     public function getIdentifierSeparator();
+
+    /**
+     * Quote identifier in fragment
+     *
+     * @param  string $identifier
+     * @param  array $safeWords
+     * @return string
+     */
     public function quoteIdentifierInFragment($identifier, array $additionalSafeWords = array());
 }
diff --git a/library/Zend/Db/Adapter/StatementContainerInterface.php b/library/Zend/Db/Adapter/StatementContainerInterface.php
index 275a6d461bf..d1beb7dfc70 100644
--- a/library/Zend/Db/Adapter/StatementContainerInterface.php
+++ b/library/Zend/Db/Adapter/StatementContainerInterface.php
@@ -18,27 +18,31 @@
 interface StatementContainerInterface
 {
     /**
-     * @abstract
+     * Set sql
+     *
      * @param $sql
      * @return mixed
      */
     public function setSql($sql);
 
     /**
-     * @abstract
+     * Get sql
+     *
      * @return mixed
      */
     public function getSql();
 
     /**
-     * @abstract
+     * Set parameter container
+     *
      * @param ParameterContainer $parameterContainer
      * @return mixed
      */
     public function setParameterContainer(ParameterContainer $parameterContainer);
 
     /**
-     * @abstract
+     * Get parameter container
+     *
      * @return mixed
      */
     public function getParameterContainer();