diff --git a/framework/yii/data/ActiveDataProvider.php b/framework/yii/data/ActiveDataProvider.php
index 13502f9..2b7400c 100644
--- a/framework/yii/data/ActiveDataProvider.php
+++ b/framework/yii/data/ActiveDataProvider.php
@@ -53,7 +53,7 @@ use yii\db\Connection;
 class ActiveDataProvider extends DataProvider
 {
 	/**
-	 * @var Query the query that is used to fetch data items and [[totalItemCount]]
+	 * @var Query the query that is used to fetch data items and [[totalCount]]
 	 * if it is not explicitly set.
 	 */
 	public $query;
@@ -98,29 +98,29 @@ class ActiveDataProvider extends DataProvider
 	/**
 	 * Returns the number of data items in the current page.
 	 * This is equivalent to `count($provider->items)`.
-	 * When [[pagination]] is false, this is the same as [[totalItemCount]].
+	 * When [[pagination]] is false, this is the same as [[totalCount]].
 	 * @param boolean $refresh whether to recalculate the item count. If true,
 	 * this will cause re-fetching of [[items]].
 	 * @return integer the number of data items in the current page.
 	 */
-	public function getItemCount($refresh = false)
+	public function getCount($refresh = false)
 	{
 		return count($this->getItems($refresh));
 	}
 
 	/**
 	 * Returns the total number of data items.
-	 * When [[pagination]] is false, this returns the same value as [[itemCount]].
-	 * If [[totalItemCount]] is not explicitly set, it will be calculated
+	 * When [[pagination]] is false, this returns the same value as [[count]].
+	 * If [[totalCount]] is not explicitly set, it will be calculated
 	 * using [[query]] with a COUNT query.
 	 * @param boolean $refresh whether to recalculate the item count
 	 * @return integer total number of possible data items.
 	 * @throws InvalidConfigException
 	 */
-	public function getTotalItemCount($refresh = false)
+	public function getTotalCount($refresh = false)
 	{
 		if ($this->getPagination() === false) {
-			return $this->getItemCount($refresh);
+			return $this->getCount($refresh);
 		} elseif ($this->_count === null || $refresh) {
 			if (!$this->query instanceof Query) {
 				throw new InvalidConfigException('The "query" property must be an instance of Query or its subclass.');
@@ -135,7 +135,7 @@ class ActiveDataProvider extends DataProvider
 	 * Sets the total number of data items.
 	 * @param integer $value the total number of data items.
 	 */
-	public function setTotalItemCount($value)
+	public function setTotalCount($value)
 	{
 		$this->_count = $value;
 	}
@@ -153,7 +153,7 @@ class ActiveDataProvider extends DataProvider
 				throw new InvalidConfigException('The "query" property must be an instance of Query or its subclass.');
 			}
 			if (($pagination = $this->getPagination()) !== false) {
-				$pagination->itemCount = $this->getTotalItemCount();
+				$pagination->totalCount = $this->getTotalCount();
 				$this->query->limit($pagination->getLimit())->offset($pagination->getOffset());
 			}
 			if (($sort = $this->getSort()) !== false) {
diff --git a/framework/yii/data/ArrayDataProvider.php b/framework/yii/data/ArrayDataProvider.php
index b501afe..6a4aa7a 100644
--- a/framework/yii/data/ArrayDataProvider.php
+++ b/framework/yii/data/ArrayDataProvider.php
@@ -67,34 +67,34 @@ class ArrayDataProvider extends DataProvider
 	 */
 	public $allItems;
 
-	private $_count;
+	private $_totalCount;
 
 	/**
 	 * Returns the total number of data items.
 	 * @return integer total number of possible data items.
 	 * @throws InvalidConfigException
 	 */
-	public function getTotalItemCount()
+	public function getTotalCount()
 	{
 		if ($this->getPagination() === false) {
-			return $this->getItemCount();
-		} elseif ($this->_count === null) {
+			return $this->getCount();
+		} elseif ($this->_totalCount === null) {
 			if ($this->allItems !== null) {
-				$this->_count = count($this->allItems);
+				$this->_totalCount = count($this->allItems);
 			} else {
-				throw new InvalidConfigException('Unable to determine total item count: either "allItems" or "totalItemCount" must be set.');
+				throw new InvalidConfigException('Unable to determine total item count: either "allItems" or "totalCount" must be set.');
 			}
 		}
-		return $this->_count;
+		return $this->_totalCount;
 	}
 
 	/**
 	 * Sets the total number of data items.
 	 * @param integer $value the total number of data items.
 	 */
-	public function setTotalItemCount($value)
+	public function setTotalCount($value)
 	{
-		$this->_count = $value;
+		$this->_totalCount = $value;
 	}
 
 	private $_items;
@@ -116,7 +116,7 @@ class ArrayDataProvider extends DataProvider
 			}
 
 			if (($pagination = $this->getPagination()) !== false) {
-				$pagination->itemCount = $this->getTotalItemCount();
+				$pagination->totalCount = $this->getTotalCount();
 				$items = array_slice($items, $pagination->getOffset(), $pagination->getLimit());
 			}
 
diff --git a/framework/yii/data/DataProvider.php b/framework/yii/data/DataProvider.php
index bd3ce12..5003d05 100644
--- a/framework/yii/data/DataProvider.php
+++ b/framework/yii/data/DataProvider.php
@@ -96,7 +96,7 @@ abstract class DataProvider extends Component implements IDataProvider
 	 * Returns the number of data items in the current page.
 	 * @return integer the number of data items in the current page.
 	 */
-	public function getItemCount()
+	public function getCount()
 	{
 		return count($this->getItems());
 	}
diff --git a/framework/yii/data/IDataProvider.php b/framework/yii/data/IDataProvider.php
index a881364..024be90 100644
--- a/framework/yii/data/IDataProvider.php
+++ b/framework/yii/data/IDataProvider.php
@@ -22,17 +22,17 @@ interface IDataProvider
 	/**
 	 * Returns the number of data items in the current page.
 	 * This is equivalent to `count($provider->getItems())`.
-	 * When [[pagination]] is false, this is the same as [[totalItemCount]].
+	 * When [[pagination]] is false, this is the same as [[totalCount]].
 	 * @return integer the number of data items in the current page.
 	 */
-	public function getItemCount();
+	public function getCount();
 
 	/**
 	 * Returns the total number of data items.
-	 * When [[pagination]] is false, this is the same as [[itemCount]].
+	 * When [[pagination]] is false, this is the same as [[count]].
 	 * @return integer total number of possible data items.
 	 */
-	public function getTotalItemCount();
+	public function getTotalCount();
 
 	/**
 	 * Returns the data items in the current page.
diff --git a/framework/yii/data/Pagination.php b/framework/yii/data/Pagination.php
index da93518..adc3730 100644
--- a/framework/yii/data/Pagination.php
+++ b/framework/yii/data/Pagination.php
@@ -14,7 +14,7 @@ use yii\base\Object;
  * Pagination represents information relevant to pagination of data items.
  *
  * When data needs to be rendered in multiple pages, Pagination can be used to
- * represent information such as [[itemCount|total item count]], [[pageSize|page size]],
+ * represent information such as [[totalCount|total item count]], [[pageSize|page size]],
  * [[page|current page]], etc. These information can be passed to [[yii\widgets\Pager|pagers]]
  * to render pagination buttons or links.
  *
@@ -28,7 +28,7 @@ use yii\base\Object;
  * {
  *     $query = Article::find()->where(array('status' => 1));
  *     $countQuery = clone $query;
- *     $pages = new Pagination(array('itemCount' => $countQuery->count()));
+ *     $pages = new Pagination(array('totalCount' => $countQuery->count()));
  *     $models = $query->offset($pages->offset)
  *         ->limit($pages->limit)
  *         ->all();
@@ -91,7 +91,7 @@ class Pagination extends Object
 	/**
 	 * @var boolean whether to check if [[page]] is within valid range.
 	 * When this property is true, the value of [[page]] will always be between 0 and ([[pageCount]]-1).
-	 * Because [[pageCount]] relies on the correct value of [[itemCount]] which may not be available
+	 * Because [[pageCount]] relies on the correct value of [[totalCount]] which may not be available
 	 * in some cases (e.g. MongoDB), you may want to set this property to be false to disable the page
 	 * number validation. By doing so, [[page]] will return the value indexed by [[pageVar]] in [[params]].
 	 */
@@ -104,7 +104,7 @@ class Pagination extends Object
 	/**
 	 * @var integer total number of items.
 	 */
-	public $itemCount = 0;
+	public $totalCount = 0;
 
 
 	/**
@@ -113,10 +113,10 @@ class Pagination extends Object
 	public function getPageCount()
 	{
 		if ($this->pageSize < 1) {
-			return $this->itemCount > 0 ? 1 : 0;
+			return $this->totalCount > 0 ? 1 : 0;
 		} else {
-			$itemCount = $this->itemCount < 0 ? 0 : (int)$this->itemCount;
-			return (int)(($itemCount + $this->pageSize - 1) / $this->pageSize);
+			$totalCount = $this->totalCount < 0 ? 0 : (int)$this->totalCount;
+			return (int)(($totalCount + $this->pageSize - 1) / $this->pageSize);
 		}
 	}