Depending on the J2EE and DB2 infrastructure implementation the JNDI data source definition USES JDBC type 2 or JDBC type 4 for Java database connectivity.

根据J2EE和DB 2基础结构实现，JNDI数据源定义使用JDBC type 2或JDBC type 4连接数据库。

Depending on the J2EE and DB2 infrastructure implementation, the JNDI data source definition USES JDBC type 2 or JDBC type 4 for Java database connectivity.

根据J2EE和DB 2基础结构实现，JNDI数据源定义使用JDBC type 2或JDBC type 4连接数据库。

In the development of database applications based on JDBC Java database connectivity, the database connection management is an important factor which determine the performance.

在基于JDBC的数据库应用开发中，数据库连接的管理是决定该应用性能的一个重要因素。