•It is set of classes that implement the JDBC interfaces for particular database engine. Database engine is process instance of software (program) that accesses the data from database. As a middle ware between bdms and j2ee.
•It translates the routine into low-lavel language which can be understood by the BDMS.
•Establishes connection between dbms and j2ee component. Close the connection also.
•Sends request data source and returns result set to application.
•Performs transaction when required.
•Manipulates errors.
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