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An object–relational database (ORD), or object–relational database management system (ORDBMS), is a database management system (DBMS) similar to a relational database, but with an object-oriented database model: objects, classes and inheritance are directly supported in database schemas and in the query language.
Development with db4o database does not require a separate data model creation, the application's class model defines the structure of the data. db4o attempts to avoid the object/relational impedance mismatch by eliminating the relational layer from a software project. db4o is written in Java and .NET and provides the respective APIs. It can ...
The Object Data Management Group was a consortium of object database and object–relational mapping vendors, members of the academic community, and interested parties. Its goal was to create a set of specifications that would allow for portable applications that store objects in database management systems.
The Enterprise Objects Framework, or simply EOF, was introduced by NeXT in 1994 as a pioneering object-relational mapping product for its NeXTSTEP and OpenStep development platforms. EOF abstracts the process of interacting with a relational database by mapping database rows to Java or Objective-C objects.
Embedded database supporting efficient, distributed management of C++ and Java objects. Avoids the complexities and limitations of ORM products such as Hibernate by storing objects directly with their relationships intact. Uses a page-based mapping system for fast locking and efficient, distributed, client-side caching. ODABA: 12.3.0 (August 2013)
The dimensional model is a specialized adaptation of the relational model used to represent data in data warehouses in a way that data can be easily summarized using online analytical processing, or OLAP queries. In the dimensional model, a database schema consists of a single large table of facts that are described using dimensions and measures.
Enterprise Objects Framework, Mac OS X/Java, part of Apple WebObjects; Hibernate, open-source ORM framework, widely used; Java Data Objects (JDO) JOOQ Object Oriented Querying (jOOQ) Kodo, commercial implementation of both Java Data Objects and Java Persistence API; TopLink by Oracle
This is a comparison of object–relational database management systems (ORDBMSs). Each system has at least some features of an object–relational database ; they vary widely in their completeness and the approaches taken.