SQL Server 2005's Type 4 JDBC driver provides database connectivity from a Java application. Though the driver class and connection URL are a bit different in this version, connectivity is a snap.

You could just implement a corresponding Java type that implements the SQLData interface and then tell the connection object the new SQL-Java type mapping via the Connection.setTypeMap() method.

How to connect Java to a PostgreSQL database The steps required to connect a Java application to a PostgreSQL database follow the same pattern as other databases such as MySQL, SQLite and Microsoft's ...

Here's a quick JDBC with HSQLDB tutorial to get you up and running with Java database connectivity and the popular HyperSQL database.