JPA Interview Questions and Answers
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JPA (Java Persistence API) is a Java EE and Java SE specification that describes a management system for saving java objects to relational database tables in a convenient form.
Java itself does not contain JPA implementations, however, there are many implementations of this specification from different companies (open and not). This is not the only way to save java objects in databases (ORM systems), but one of the most popular in the Java world.
Mapping between database tables and java objects called ORM (Object Relational Mapping). JPA (Java Persistence API) provides and ORM facility for managing relational tables in Java applications. It is a specification and few implementations are like Hibernate, JDO, EJB, Toplink. By using JPA can be fetched data, insert, update etc.
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