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The Jakarta Persistence Query Language (JPQL; formerly Java Persistence Query Language) is a platform-independent object-oriented query language [1]: 284, §12 defined as part of the Jakarta Persistence (JPA; formerly Java Persistence API) specification. JPQL is used to make queries against entities stored in a relational database.
Hibernate provides a SQL inspired language called Hibernate Query Language (HQL) for writing SQL-like queries against Hibernate's data objects. Criteria Queries are provided as an object-oriented alternative to HQL. Criteria Query is used to modify the objects and provide the restriction for the objects.
Hibernate Query Language, a language for writing queries against Hibernate data objects; Tashkurgan Khunjerab Airport (IATA: HQL), Kashgar, Xinjiang, China; H & Q Life Sciences Investors, a company listed on the New York Stock Exchange; Handgun Qualification License, under the gun laws in Maryland, United States
Jakarta Persistence, also known as JPA (abbreviated from formerly name Java Persistence API) is a Jakarta EE application programming interface specification that describes the management of relational data in enterprise Java applications.
EJB QL is a database query language similar to SQL. The used queries are somewhat different from relational SQL, as it uses a so-called "abstract schema" of the enterprise beans instead of the relational model. In other words, EJB QL queries do not use tables and their components, but enterprise beans, their persistent state, and their ...
Object–relational mapping (ORM, O/RM, and O/R mapping tool) in computer science is a programming technique for converting data between a relational database and the memory (usually the heap) of an object-oriented programming language.
AutoFetch [1] is a technique for automating the normally manual process of specifying prefetching hints for object–relational mapping queries.. Ali Ibrahim and William Cook at the University of Texas at Austin developed the idea of "AutoFetch" including an implementation for Hibernate and followed later by an implementation in Ebean.
In software, a data access object (DAO) is a pattern that provides an abstract interface to some type of database or other persistence mechanism.By mapping application calls to the persistence layer, the DAO provides data operations without exposing database details.