236 Glossary instance that has been made persistent
236 Glossary instance that has been made persistent and subsequently deleted, all within the current transaction Persistent-Nontransactional (JDO state) The state that applies to any JDO instance that represents a persistent data store entity, but which is not guaranteed to be transactionally consistent with that entity persistent object model 1. The set of restrictions placed on an object model in order for it to be persistable through JDO, and the implications of persisting an object model through JDO 2. An object model comprising persistence-capable classes primary key class (EJB) One of the classes that make up an entity bean component, specifically the class that provides identity for the entity bean; EJB primary key classes can be replaced by JDO Object ID classes if the underlying BMP mechanism is JDO primary key class (JDO) The Object ID class for a persistence-capable class with application identity is sometimes referred to as the class s primary key class projection The capability of a query language to return a result comprising objects that are not instances of the candidate class; not currently available in JDOQL provisionally persistent A transient instance to be made persistent through persistence by reachability is actually made provisionally persistent until the transaction commits; on commit the instance becomes persistent if and only if it is still reachable from a persistent instance (i.e. it has not been detached from the object graph in the interim) QOM Query object model RDBMS Relational database management system a data store that natively persists data as tables of rows and columns; storage of objects requires that they be decomposed into constituent field values, each of which is stored as a column value remote interface (EJB) One of the interfaces that make up an EJB component, specifically the interface that identifies those business methods that the client may invoke on the component required JDO features Features detailed in the JDO specification that an implementation must support in order to be JDO-compliant RMI Remote Method Invocation a Java API for distributed programming SPI Service providers interface programming interface used by the service provider, as opposed to the application developer SQL Structured Query Language
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