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J2EE Design Patterns —
Data Access Tier Pattern Samples
These data access tier patterns tackles best
practices for an application accessesing the database or the underlying
persistence layer from the business tier The patterns demonstrated
here focus on and solve design problems occuring in the data tier
of a J2EE application.
Data Access Object Design Pattern
[6-Oct-2004]
The DAO implements the access mechanism required
to work with the data source. The data source could be a persistent
store like an RDBMS, an external service like a B2B exchange, a repository
like an LDAP database, or an XML Repository. Using the scenario of
web based News Application, this sample application demonstrates the
effective use of the DAO pattern.
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