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Java EE 7 Developer Handbook by Peter A. Pilgrim

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Troubleshooting entity persistence

It is very thorough and clean specification that allows the skilled developer to write persistence code as Java object with meta data. The meta data allows the JPA provider to store data into a relational database. The technical content of JPA specification is of such a high level that cloud computing providers are already attempting to adapt it to their specialist environments, which have included key-value No-SQL database, albeit with limitations.

Nevertheless, if your development is targeted at relational databases then JPA canhelp your application evolve at fast agile pace without having to handcode native SQL statements.

Fetch performance

In the earlier part of the chapter, we introduced the topic of fetching ...

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