Object–relational mapping

programming technique

Java ORM framework

Jakarta EE persistence API

thumb|Mike Bayer talking about SQLAlchemy at PyCon 2012 SQLAlchemy is an open-source Python library that provides an SQL toolkit (called "SQLAlchemy Core") and an object–relational mapper (ORM) for database interactions. It allows developers to work with databases using Python objects, enabling efficient and flexible database access.

object-relational mapping framework for ADO.NET

object-relational mapping for PHP

persistence framework

NHibernate is a port of the Hibernate object–relational mapping (ORM) framework for the Microsoft .NET platform. It provides a framework for mapping an object-oriented domain model to a traditional relational database. It is used to map an object-oriented domain model to a relational database, aiming to reduce the amount of manual coding required for data persistence. NHibernate is free and open-source software, distributed under the GNU Lesser General Public License.

MyBatis is a Java persistence framework that couples objects with stored procedures or SQL statements using an XML descriptor or annotations.

specification of Java object persistence

Open Source Java framework for object relational mapping (ORM), persistence, and caching

Wikimedia list article

set of conceptual and technical difficulties

EclipseLink is the open source Eclipse Persistence Services Project from the Eclipse Foundation. The software provides an extensible framework that allows Java developers to interact with various data services, including databases, web services, Object XML mapping (OXM), and enterprise information systems (EIS). EclipseLink supports a number of persistence standards including: Jakarta Persistence (JPA) Jakarta XML Binding (JAXB) Jakarta Connectors (JCA) Service Data Objects (SDO)

SQLObject is a Python object-relational mapper between a SQL database and Python objects. It is experiencing community popularity, and forms a part of many applications (e.g., TurboGears). It is very similar to Ruby on Rails' ActiveRecord in operation in that it uses class definitions to form table schemas, and utilizes the language's reflection and dynamism to be useful.

open-source implementation of Java Persistence API