Avoiding the Quagmire
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چکیده
For almost a full decade now, the Java community has struggled with the Object/Relational impedance mismatch, a fundamental problem for those who would seek to store rich domain objects into a relational database. While this problem is not unique to Java—C++ developers wrestled with the problem long before Java was available, and .NET developers are just beginning to discover the depths of the issues involved—it is in Java that this particular battle has been fought most publicly and extensively. No less than four “standards” have been offered up as solutions (EJB Entity Beans, Java Data Objects, Java Persistence Architecture, and the aborted datamapping solution proposed for Java6), and countless open-source projects have all attempted their own solutions, the most famous of which include Hibernate and Castor JDO. .NET developers are finding similar kinds of solutions, both from Microsoft (in the form of LINQ and language enhancements to C# and VB) and from the open-source community (in the form of NHibernate) and commercial sector.
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تاریخ انتشار 2007