Free J2EE Entity EJB Development Tutorial

“>This article contains excerpts from Building Java Enterprise Systems with J2EE.EJB and JDBCThe need to connect to databases from within EJB is clearly one of the moresignificant needs of the EJB specification. All J2EE-based components need totalk with a database, and J2EE provides support for this via JDBC. Vendors suchas Oracle and a future J2EE specification will allow the use of SQLJ to providedatabase connectivity. However, the primary approach that I advocate and assumehere is 
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