diff --git a/lib/zdb/zdb.class.php b/lib/zdb/zdb.class.php
index d70f4526f9..1a5cceca37 100644
--- a/lib/zdb/zdb.class.php
+++ b/lib/zdb/zdb.class.php
@@ -12,16 +12,16 @@
 class zdb
 {
     /**
-     * dbh 
-     * 
-     * @var object   
+     * dbh
+     *
+     * @var object
      * @access public
      */
     public $dbh;
 
     /**
-     * Construct 
-     * 
+     * Construct
+     *
      * @access public
      * @return void
      */
@@ -33,33 +33,159 @@ class zdb
 
     /**
      * Get all tables.
-     * 
+     *
+     * @param  string $type  if type is 'base', just get base table.
      * @access public
      * @return array
      */
-    public function getAllTables()
+    public function getAllTables($type = 'base')
     {
         global $config;
 
         $allTables = array();
         $stmt      = $this->dbh->query("show full tables");
-        while($table = $stmt->fetch(PDO::FETCH_ASSOC)) 
+        while($table = $stmt->fetch(PDO::FETCH_ASSOC))
         {
             $tableType = strtolower($table['Table_type']);
-            if($tableType != 'base table') continue;
+            if($type == 'base' and $tableType != 'base table') continue;
 
             $tableName = $table["Tables_in_{$config->db->name}"];
-            $allTables[$tableName] = 'table';
+            $allTables[$tableName] = $tableType == 'base table' ? 'table' : $tableType;
         }
 
         return $allTables;
     }
 
     /**
-     * Dump db. 
-     * 
-     * @param  string $fileName 
-     * @param  array  $tables 
+     * Get table fields.
+     *
+     * @param  string $table
+     * @access public
+     * @return array
+     */
+    public function getTableFields($table)
+    {
+        try
+        {
+            $this->dbh->setAttribute(PDO::ATTR_CASE, PDO::CASE_LOWER);
+            $sql = "DESC $table";
+            $rawFields = $this->dbh->query($sql)->fetchAll();
+            $this->dbh->setAttribute(PDO::ATTR_CASE, PDO::CASE_NATURAL);
+        }
+        catch (PDOException $e)
+        {
+            global $dao;
+            $dao->sqlError($e);
+        }
+
+        $fields = array();
+        foreach($rawFields as $field) $fields[$field->field] = $field;
+
+        return $fields;
+    }
+
+    /**
+     * Diff current table fields with a fields array.
+     *
+     * @param  string $table
+     * @param  array  $fields
+     * @access public
+     * @return array
+     */
+    public function diffTable($table, $fields)
+    {
+        $tableFields = $this->getTableFields($table);
+
+        $diff = array_udiff_assoc($fields, $tableFields,
+            function($a, $b)
+            {
+                return (array)$a == (array)$b ? 0 : 1;
+            }
+        );
+
+        return $diff;
+    }
+
+    /**
+     * Add a column to a table, or modify a existing column.
+     *
+     * @param  string  $table
+     * @param  object  $column
+     * @param  boolean $add    if true, add $column as a new column, otherwise modify a existing column to $column.
+     * @access public
+     * @return object
+     */
+    public function updateColumn($table, $column, $add = true)
+    {
+        $return = new stdclass();
+        $return->result = true;
+        $return->error  = '';
+
+        $query = "ALTER TABLE `$table` " . ($add ? 'ADD' : 'MODIFY COLUMN') . " `$column->field` $column->type" . ($column->null == 'NO' ? ' NOT NULL' : '') . (is_null($column->default) ? '' : " DEFAULT '$column->default'") . (empty($column->extra) ? '' : " $column->extra") . ';';
+
+        try
+        {
+            $this->dbh->exec($query);
+            return $return;
+        }
+        catch(PDOException $e)
+        {
+            $return->result = false;
+            $return->error  = $e->getMessage();
+            $return->sql    = $query;
+            return $return;
+        }
+    }
+
+    /**
+     * Create a table with fields.
+     *
+     * @param  string $name
+     * @param  array  $fields
+     * @access public
+     * @return object
+     */
+    public function createTable($name, $fields)
+    {
+        $return = new stdclass();
+        $return->result = true;
+        $return->error  = '';
+        $createTableQuery = "CREATE TABLE `$name` (";
+
+        foreach($fields as $field)
+        {
+            $createColumnQuery = "`$field->field` $field->type" . ($field->null == 'NO' ? ' NOT NULL' : '') . (is_null($field->default) ? '' : " DEFAULT '$field->default'") . (empty($field->extra) ? '' : " $field->extra") . ", ";
+            if(!empty($field->key))
+            {
+                if($field->key === 'PRI') $createColumnQuery .= "PRIMARY KEY (`{$field->field}`), ";
+                if($field->key === 'MUL') $createColumnQuery .= "KEY `{$field->field}` (`{$field->field}`), ";
+                if($field->key === 'UNI') $createColumnQuery .= "UNIQUE KEY `{$field->field}` (`{$field->field}`), ";
+            }
+            $createTableQuery .= $createColumnQuery;
+        }
+
+        $createTableQuery = rtrim($createTableQuery, ', ');
+        $createTableQuery .= ") ENGINE=MyISAM DEFAULT CHARSET=utf8;";
+
+        try
+        {
+            $this->dbh->exec($createTableQuery);
+            return $return;
+        }
+        catch(PDOException $e)
+        {
+            $return->result = false;
+            $return->error  = $e->getMessage();
+            $return->sql    = $createTableQuery;
+            return $return;
+        }
+    }
+
+    /**
+     * Dump db.
+     *
+     * @param  string $fileName
+     * @param  array  $tables
      * @access public
      * @return object
      */
@@ -139,10 +265,11 @@ class zdb
     }
 
     /**
-     * Import DB 
-     * 
+     * Import DB
+     *
+     * @param  string $fileName
      * @access public
-     * @return object;
+     * @return object
      */
     public function import($fileName)
     {
@@ -210,10 +337,10 @@ class zdb
 
     /**
      * Get schema SQL.
-     * 
-     * @param  string    $table 
+     *
+     * @param  string $table
      * @access public
-     * @return string
+     * @return object
      */
     public function getSchemaSQL($table, $type = 'table')
     {
diff --git a/module/repo/lang/de.php b/module/repo/lang/de.php
index c425ff526e..77110e47cf 100644
--- a/module/repo/lang/de.php
+++ b/module/repo/lang/de.php
@@ -100,7 +100,7 @@ $lang->repo->split          = "Split Mark";
 
 $lang->repo->objectRule   = 'Object Rule';
 $lang->repo->objectIdRule = 'Object ID Rule';
-$lang->repo->actionRule   = 'Action RUle';
+$lang->repo->actionRule   = 'Action Rule';
 $lang->repo->manHourRule  = 'Man-hour Rule';
 $lang->repo->ruleUnit     = "Unit";
 $lang->repo->ruleSplit    = "Multiple keywords are divided by ';'. For example: task multiple keywords: Task;task";
diff --git a/module/repo/lang/en.php b/module/repo/lang/en.php
index c425ff526e..3e1e97b449 100644
--- a/module/repo/lang/en.php
+++ b/module/repo/lang/en.php
@@ -7,9 +7,9 @@ $lang->repo->createAction    = 'Create Repo';
 $lang->repo->edit            = 'Edit';
 $lang->repo->editAction      = 'Edit Repo';
 $lang->repo->delete          = 'Delete Repo';
-$lang->repo->showSyncCommit  = 'Display Synchronization';
+$lang->repo->showSyncCommit  = 'Display Sync';
 $lang->repo->ajaxSyncCommit  = 'Interface: Ajax Sync Note';
-$lang->repo->setRules        = 'Set rules';
+$lang->repo->setRules        = 'Set Rules';
 $lang->repo->download        = 'Download File';
 $lang->repo->downloadDiff    = 'Download Diff';
 $lang->repo->diffAction      = 'Revision Diff';
@@ -90,7 +90,7 @@ $lang->repo->openedDate = 'CreatedDate';
 $lang->repo->latestRevision = 'Latest Revision';
 $lang->repo->actionInfo     = "Add by %s in %s";
 $lang->repo->changes        = "Change Log";
-$lang->repo->reviewLocation = "File: %s@%s, line:%s - %s";
+$lang->repo->reviewLocation = "File: %s@%s, Line: %s - %s";
 $lang->repo->commentEdit    = '<i class="icon-pencil"></i>';
 $lang->repo->commentDelete  = '<i class="icon-remove"></i>';
 $lang->repo->allChanges     = "Other Changes";
@@ -100,7 +100,7 @@ $lang->repo->split          = "Split Mark";
 
 $lang->repo->objectRule   = 'Object Rule';
 $lang->repo->objectIdRule = 'Object ID Rule';
-$lang->repo->actionRule   = 'Action RUle';
+$lang->repo->actionRule   = 'Action Rule';
 $lang->repo->manHourRule  = 'Man-hour Rule';
 $lang->repo->ruleUnit     = "Unit";
 $lang->repo->ruleSplit    = "Multiple keywords are divided by ';'. For example: task multiple keywords: Task;task";
@@ -119,17 +119,17 @@ $lang->repo->encodingList['utf_8'] = 'UTF-8';
 $lang->repo->encodingList['gbk']   = 'GBK';
 
 $lang->repo->scmList['Git']        = 'Git';
-$lang->repo->scmList['Subversion'] = 'Subversion';
+$lang->repo->scmList['Subversion'] = 'SVN';
 
 $lang->repo->notice                 = new stdclass();
 $lang->repo->notice->syncing        = 'Synchronizing. Please wait ...';
 $lang->repo->notice->syncComplete   = 'Synchronized. Now redirecting ...';
 $lang->repo->notice->syncedCount    = 'The number of records synchronized is ';
-$lang->repo->notice->delete         = 'Are you sure delete this repo?';
+$lang->repo->notice->delete         = 'Do you want to delete this repo?';
 $lang->repo->notice->successDelete  = 'Repository is removed.';
 $lang->repo->notice->commentContent = 'Comment';
-$lang->repo->notice->deleteBug      = 'Are you sure to delete this bug?';
-$lang->repo->notice->deleteComment  = 'Are you sure to delete this comment?';
+$lang->repo->notice->deleteBug      = 'Do you want to delete this bug?';
+$lang->repo->notice->deleteComment  = 'Do you want to delete this comment?';
 $lang->repo->notice->lastSyncTime   = 'Last Sync:';
 
 $lang->repo->rules = new stdclass();
diff --git a/module/repo/lang/fr.php b/module/repo/lang/fr.php
index c425ff526e..77110e47cf 100644
--- a/module/repo/lang/fr.php
+++ b/module/repo/lang/fr.php
@@ -100,7 +100,7 @@ $lang->repo->split          = "Split Mark";
 
 $lang->repo->objectRule   = 'Object Rule';
 $lang->repo->objectIdRule = 'Object ID Rule';
-$lang->repo->actionRule   = 'Action RUle';
+$lang->repo->actionRule   = 'Action Rule';
 $lang->repo->manHourRule  = 'Man-hour Rule';
 $lang->repo->ruleUnit     = "Unit";
 $lang->repo->ruleSplit    = "Multiple keywords are divided by ';'. For example: task multiple keywords: Task;task";