Open the Database Explorer app by clicking theAppstab on the MATLAB^®Toolstrip. Then, on the right of theAppssection, click theShow more画廊箭头打开应用程序. UnderDatabase Connectivity and Reporting, clickDatabase Explorer. Alternatively, enterdatabaseExplorerat the command line.

In theData Sourcesection, select反对figure Data Source>反对figure JDBC data source.

The JDBC Data Source Configuration dialog box opens.

In theNamebox, enter a name for your data source. (This example uses a data source namedPostgreSQL.) You use this name to establish a connection to your database.

From theVendorlist, selectPostgreSQL.

In theDriver Locationbox, enter the full path to the JDBC driver file.

In theDatabasebox, enter the name of your database. In the服务器box, enter the name of your database server. Consult your database administrator for the name of your database server. In thePort Numberbox, enter the port number.

Under反对nection Options, in theNamecolumn, enter the name of an additional driver-specific option. Then, in theValuecolumn, enter the value of the driver-specific option. Click the plus sign+指定附加的选项。

ClickTest. The Test Connection dialog box opens. Enter the user name and password for your database, or leave these boxes blank if your database does not require them. ClickTest.

If your connection succeeds, the Database Explorer dialog box displays a message indicating the connection is successful. Otherwise, it displays an error message.

ClickSave. The JDBC Data Source Configuration dialog box displays a message indicating the data source is saved successfully. Close this dialog box.

Create a JDBC data source for a PostgreSQL database.

vendor ="PostgreSQL"; opts = databaseConnectionOptions("jdbc",vendor);

Set the JDBC connection options. For example, this code assumes that you are connecting to a JDBC data source namedPostgreSQL, full path of the JDBC driver fileC:\Drivers\postgresql-8.4-702.jdbc4.jar, database nametoystore_doc, database serverdbtb00, and port number5432.

opts = setoptions(opts,...'DataSourceName',"PostgreSQL",...'JDBCDriverLocation',"C:\Drivers\postgresql-8.4-702.jdbc4.jar",...'DatabaseName',"toystore_doc",'Server',"dbtb00",...'PortNumber',5432);

Test the database connection by specifying the user nameusernameand passwordpwd, or leave these arguments blank if your database does not require them.

username ="username"; password ="pwd"; status = testConnection(opts,username,password);

Save the JDBC data source.

saveAsDataSource(opts)

On theDatabase Explorertab, in the反对nectionssection, click反对nectand select the data source for the connection.

In the connection dialog box, enter a user name and password, or leave these boxes blank if your database does not require them. Click反对nect.

The Catalog and Schema dialog box opens.

Select the catalog and schema from theCatalogandSchemalists. ClickOK.

The app connects to the database and displays its tables in theData Browserpane. A data source tab appears to the right of the pane. The title of the data source tab is the data source name that you defined during the setup. The data source tab contains emptySQL QueryandData Previewpanes.

Select tables in theData Browserpane to query the database.

Close the data source tab to close the SQL query. In the反对nectionssection, close the database connection by clickingClose Connection.

反对nect to a PostgreSQL database using the configured JDBC data source, user nameusername, and passwordpwd.

datasource ="PostgreSQL"; username ="username"; password ="pwd"; conn = database(datasource,username,password);

Close the database connection.

close(conn)