PostgreSQL
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# Connecting to the Database

With JDBC, a database is represented by a URL (Uniform Resource Locator). With Postgres, this takes one of the following forms:

- jdbc:postgresql:`database`

- jdbc:postgresql://`host`/`database`

- jdbc:postgresql://`host` `port`/`database`

where:

`host`

  The hostname of the server. Defaults to "localhost".

`port`

  The port number the server is listening on. Defaults to the Postgres standard port number (5432).

`database`

  The database name.

To connect, you need to get a Connection instance from JDBC. To do this, you would use the DriverManager.getConnection() method:

    Connection db = DriverManager.getConnection(url,user,pwd);

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