Hibernate facilitated the storage and retrieval of domain objects via Object/Relational Mapping. Today, Hibernate is a collection of related projects enabling developers to utilize POJO-style domain models in their applications in ways extending well beyond Object/Relational Mapping. Hibernate lets you develop persistent classes following natural Object-oriented idioms including inheritance, polymorphism, association, composition. It supports Oracle, DB2, MySQL, PostgreSQL, Sybase, Interbase, Microsoft SQL Server, Progress, SAP DB, and HypersonicSQL. It also provides support to do text search and Shard (horizontal partition) the database.
 <UL>
	<LI>Transparent Persistence</LI>
	<LI>High Performance</LI>
	<LI>Reliability and Scalability</LI>
	<LI>Extensibility: Hibernate is highly customizable and extensible. </LI>
	<LI>Support for Hibernate Query Language (HQL)</LI>
 </UL>

Hibernate facilitated the storage and retrieval of domain objects via Object/Relational Mapping.  Today, Hibernate is a collection of related projects enabling developers to utilize POJO-style domain models in their applications in ways extending well beyond Object/Relational Mapping.

Hibernate - Relational Persistence for Java

NHibernate is a mature, open source object-relational mapper for the .NET framework. NHibernate is a port of Hibernate Core for Java to the .NET Framework. It handles persisting plain .NET objects to and from an underlying relational database. NHibernate supports transparent persistence, your object classes don't have to follow a restrictive programming model. Persistent classes do not need to implement any interface or inherit from a special base class. This makes it possible to design the business logic using plain .NET (CLR) objects and object-oriented idiom. Full Text Search. Cluster-scoped caching with Microsoft Velocity & Memcached. Business validation rules. ReSharper plugin. Castle Active Record. S#arp Architecture. And many more... 
 <UL><li>Natural programming model - NHibernate supports natural OO idiom; inheritance, polymorphism, composition and the .NET collections framework, including generic collections.</li></ul><ul style="text-align: justify;"><li>Native .NET - NHibernate API uses .NET conventions and idioms</li></ul><ul style="text-align: justify;"><li>Support for fine-grained object models - a rich variety of mappings for collections and dependent objects</li></ul><ul style="text-align: justify;"><li>No build-time bytecode enhancement - there's no extra code generation or bytecode processing steps in your build procedure</li></ul><ul style="text-align: justify;"><li>The query options - NHibernate addresses both sides of the problem; not only how to get objects into the database, but also how to get them out again</li></ul><ul style="text-align: justify;"><li>Custom SQL - specify the exact SQL that NHibernate should use to persist your objects. Stored procedures are supported on Microsoft SQL Server.</li></ul><ul style="text-align: justify;"><li>Support for "conversations" - NHibernate supports long-lived persistence contexts, detach/reattach of objects, and takes care of optimistic locking automatically</li></ul><ul style="text-align: justify;"></ul>

NHibernate is a mature, open source object-relational mapper for the .NET framework. NHibernate is a port of Hibernate Core for Java to the .NET Framework. It handles persisting plain .NET objects to and from an underlying relational database.

NHibernate - object-relational mapper for .NET

Object relational mapper (ORM) for PHP that sits on top of a powerful database abstraction layer (DBAL). One of its key features is the option to write database queries in a proprietary object oriented SQL dialect called Doctrine Query Language (DQL), inspired by Hibernates HQL. This provides developers with a powerful alternative to SQL that maintains flexibility without requiring unnecessary code duplication. The Doctrine ORM aims to provide transparent object persistence for idiomatic, object-oriented PHP. It is very similar in nature and API to the Java Persistence API with a lot of PHP-specific features aiming at more simplicity and practicability for the PHP environment.

Object relational mapper (ORM) for PHP that sits on top of a powerful database abstraction layer (DBAL). One of its key features is the option to write database queries in a proprietary object oriented SQL dialect called Doctrine Query Language (DQL), inspired by Hibernates HQL. This provides developers with a powerful alternative to SQL that maintains flexibility without requiring unnecessary code duplication.

Doctrine ORM - Object relational mapper for PHP

pdoMap is a PHP ORM (object-relational mapping) framework. The main aim of this project is to provide to PHP developers a RAD framework and a new way of dealing with databases. Its features include
 <ul>
<li>Focus on database design by managing structure in XML</li>
<li>Mapping database tables with automatically generated classes from XML mapping files</li>
<li>Provides a RAD environment that allows to write queries in an XML syntax</li>
<li>Provides a programmatic SQL language compatible with all database engines</li>
<li>Extensible field types (by default&#160;: primary / foreign / char / text / boolean / int / float / date)</li>
<li>Provides deployment procedures and functionalities which create database and tables (including joins)</li>
<li>Creates a service oriented classes by overriding tables adapters.</li>
<li>Uses oriented event crud which enables interaction between the entities and advanced database logic.</li>
</ul>

pdoMap is a PHP ORM (object-relational mapping) framework. The main aim of this project is to provide to PHP developers a RAD framework and a new way of dealing with databases.

pdoMap - ORM for PHP

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Hibernate - Relational Persistence for Java

NHibernate - object-relational mapper for .NET

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pdoMap - ORM for PHP

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Hibernate - Relational Persistence for Java

NHibernate - object-relational mapper for .NET

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pdoMap - ORM for PHP

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