Open Database Explorer
To open the Database Explorer window
Click 
The tree diagram displays database objects in the form of a tree layout. The behavior of this module is very similar to Windows-based applications. To expand or collapse the associated list of sub-items, click each branch name. To display the details of a database object, click the object name and the corresponding information will be displayed in the right pane of the window.
The Object Information displays information about the selected database object. By clicking a tab located at the bottom of the right pane, related details about the database object are displayed.