DataDirect Connect for JDBC User's Guide and ... - Stylus Studio

30 Chapter 2 Using DataDirect Connect for JDBC Drivers
Connecting Through Data Sources
A DataDirect Connect for JDBC data source is a DataSource object
that provides the connection information needed to connect to
an underlying database. The main advantage of using a data
source is that it works with the Java Naming Directory Interface
(JNDI) naming service, and it is created and managed apart from
the applications that use it. Because the connection information
is outside of the application, the effort to reconfigure your
infrastructure when a change is made is minimal. For example, if
the underlying database is moved to another server and uses
another port number, the administrator must change only the
relevant properties of the DataDirect Connect for JDBC data source
(a DataSource object). The applications using the underlying
database do not need to change because they only refer to the
logical name of the DataDirect Connect for JDBC data source.
How Data Sources Are Implemented
DataDirect Technologies ships a data source class for each
DataDirect Connect for JDBC driver. See the appropriate driver
chapter for the name of the class.
Each DataDirect Connect for JDBC data source class provided
implements the following interfaces defined in the JDBC 2.0
Optional Package:
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■
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javax.sql.DataSource
javax.sql.ConnectionPoolDataSource, which enables you to
implement connection pooling
javax.sql.XADataSource and javax.sql.XADataConnection,
which enable you to implement distributed transactions
through JTA
DataDirect Connect for JDBC User’s Guide and Reference