232 Glossary CMT Container-managed transactions whereby transaction
232 Glossary CMT Container-managed transactions whereby transaction management for EJB components is delegated to the J2EE application server s container CORBA Common Object Request Broker Architecture datastore identity A JDO identity type whereby the identity of an instance is determined entirely by the data store DBMS Database management system DDL Data Definition Language general term for languages that define the data representation of entities in data stores, SQL being the most common example deletion The removal of the state of a persistent instance from a data store, such that the instance is no longer persistent detachment The removal of an object from an object graph, such that the removed object is no longer referenced by any other objects in the graph; if the object was a persistent JDO instance, this is not the same as deletion since the object s state will still exist in the data store and the object itself can potentially be retrieved by its Object ID through iteration of its class s extent, or through JDOQL domain object model A definition of one or more classes and their structural relationships (inheritance, implementation, association), specifically designed to represent abstractions of the business domain and containing classes that represent concepts recognizable to project stakeholders familiar with that business domain DTD Document Type Definition used to constrain XML documents EAI Enterprise Application Integration EJB Enterprise JavaBean a server-side component written according to the J2EE specification EJBQL Enterprise JavaBean Query Language used to specify the persistence of CMP entity beans equality Two object references are equal if they reference the same single object equivalence Two object references are equivalent if the (potentially different) objects that they reference represent the same thing GA General availability applies to JDO implementations that are commercially available and supported in deployment GUI Graphical user interface
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