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  This chapter provides an introduction to the various tools that JDeveloper uses to help you work with and manage databases.This chapter includes the following sections: Section 25.1, Using the Database Navigator  Section 25.2, Using the Structure Window  Section 25.3, Using the Database Reports Navigator  Section 25.4, Using the Find Database Object Window  Section 25.5, Using the SQL Worksheet  Section 25.6, Using the SQL History Window  Section 25.7, Using the Snippets Window  Section 25.8, Using the Database Object Viewer  Section 25.9, Using SQL*Plus  Section 25.10, DBMS Output Window  Section 25.11, OWA Output Window 25.1 Using the Database NavigatorThe Database Navigator provides you with a complete editing environment for online databases. You can create, update and delete database objects using the navigator.The Database Navigator is integrated with: The SQL Worksheet. The Database Object Viewer.In addition, you can drag database objects from a database connection onto a database diagram to either: Model the database objects on the diagram. Copy the database objects to a project, and model the offline database objects on the diagram.For more information about database modeling, see Section 23.5, Database Diagram. When you first open the Database Navigator, it appears in the docked position, along with any other open navigators. Its default docked position is in the upper left-hand corner, flush with the main work area of JDeveloper. When more than one navigator is open, each appears with a tab displaying its name.Right-click on a node within the Database Navigator to bring up a context-sensitive menu of commands. The menu commands available depend on the node selected. You can open nodes in their default editors, as well as other editors common to that node type, using the context menu.  Table 25-1 Database Navigator Toolbar IconsIcon Name FunctionNew connection New ConnectionClick to open the Create Database Connection wizard, where you enter the details to create a connection to a database.Refresh RefreshClick to synchronize the display in the navigator with the contents of the connection.Filter Apply FilterClick to filter which objects will be displayed for a given connection. To enable the icon, select a node within the connection in the navigator and wait for the connection to be established.You can perform various tasks from the context menus in the Database Navigator. Right-click the IDE Connections node (for globally defined connections) or an application name node (for connections that are locally-scoped, and just available within the application) and select the appropriate menu item to: Open the New Gallery. Create a new database connection. Import an XML file with connection definitions. Export current connections.You can perform the following operations from a database connection node: Connect to and disconnect from the database. Open the New Gallery. Delete the database connection. Generate SQL from database objects. Copy database objects as offline database objects to a project. Run SQL*Plus. Filter the objects displayed in the connection. Edit the database connection properties. Open the SQL Worksheet. Generate DB doc   Remote Debug Gather Schema Statistics XML DB Protocol server configuration Perform remote debugging if you are using the Java Platform Debugger Architecture (JPDA) using a debugger to listen so that a debuggee can attach to the debugger.There are additional options available from database object type nodes (for example, Tables, Indexes, or Procedures) or from database object nodes (such as a specific table, or a specific view). The options available depend on the node selected.25.2 Using the Structure WindowThe database view of the Structure Window displays details of a database object selected in the Database Navigator, or an offline database object selected in the Application Navigator.When you select a database object such as a table in a database connection in the Database Navigator or an offline database object such as a table in an offline database in the Application Navigator, a node for that object is shown in the Structure Window. You can expand the node to see details of the sub objects that make up the database object. In the case of a table, these include sub objects such as columns, constraints, and indexes.Table 25-2 Icons in the SQL Worksheet ToolbarIcon Name Functionrefresh button RefreshClick to refresh the content of the Structure Window. You may want to do this when a database object has been changed outside JDeveloper, for example using SQL*Plus, and you want to be sure that the Structure Window reflects the current state of the object.You can perform the following operations from the database view of the Structure Window: View properties or edit properties (offline database objects only) by choosing Properties from the context menu of an appropriate node. The Edit dialog for the object type opens. It is read only for database objects. Use a database object or offline database object such as a table as a template to create a new object by choosing Use as Template from the context menu. The Create dialog for the object type opens. Find usages of an offline database object such as a table by choosing Find Usages from the context menu.25.3 Using the Database Reports NavigatorUse the Database Reports Navigator to view reports about the database and its objects.You can also create your own user defined reports.  To open a pre-defined report, expand Data Dictionary Reports and navigate to the report you want. Double-click the report name to run it. A number of dialogs may be displayed before the report is opened in the Reports Results window: Select Connection dialog (all reports), where you ca
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