WebSphere support for data sources

 

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The programming model for accessing a data source is as follows:

1. An application retrieves a DataSource object from the JNDI naming space.

2. After the DataSource object is obtained, the application code calls getConnection() on the data source to get a Connection object. The connection is obtained from a pool of connections.

3. Once the connection is acquired, the application sends SQL queries or updates to the database.

WAS supports the followin data source versions...

• J2EE 1.2
• J2EE 1.3
• J2EE 1.4

Versions differ in how connections are handled. However, from an application point of view, they look the same.

To create a data source:

1. Create a JDBC provider, which provides the vendor-specific data source classpath.

2. Create a data source.

The JDBC data source encapsulates the database-specific connection settings.

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