Category Archives: Database

Mapping collection of simple type in JPA using @ElementCollection

JPA framework provides good support for mapping collections of value types. The value types can be either simple types like Integer or String, or custom embeddable types. In this short post I would like to present two most popular mappings … Continue reading

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Primary key generation in JPA

Generation of primary key values is a very important functionality of relational database management systems. The main idea is to let RDBMS automatically calculate and assign primary key value to the row being inserted into the database table. This not … Continue reading

Posted in Database, Java, Java EE, JPA | Tagged , , , | 4 Comments