.

In this way, what is JPA specification?

The Java Persistence API (JPA) is a Java specification for accessing, persisting, and managing data between Java objects / classes and a relational database. JPA was defined as part of the EJB 3.0 specification as a replacement for the EJB 2 CMP Entity Beans specification. JPA also requires a database to persist to.

Subsequently, question is, what is difference between native and named query? Native query refers to actual sql queries (referring to actual database objects). These queries are the sql statements which can be directly executed in database using a database client. Named query is the way you define your query by giving it a name.

Correspondingly, what are named queries?

A named query is a SQL expression represented as a table. In a named query, you can specify an SQL expression to select rows and columns returned from one or more tables in one or more data sources.

What is Spring Data JPA?

Spring Data JPA API provides JpaTemplate class to integrate spring application with JPA. JPA (Java Persistent API) is the sun specification for persisting objects in the enterprise application. It is currently used as the replacement for complex entity beans.