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About ObjectDB Database

ObjectDB Object Database ObjectDB is a powerful Object-Oriented Database Management System (ODBMS ... database management services (storage and retrieval, transactions, lock management, query processing ... 100% pure Java Object-Oriented Database Management System (ODBMS). No proprietary API - managed
Manual
15

JPA Persistence Unit

below). The jar-file elements specify JAR files that should be searched for managed persistable classes. The class elements specify names of managed persistable classes (see below). The property ... on using XML metadata can be found in the JPA and JDO specifications and books. Managed Persistable
Manual
15

Shared (L2) Entity Cache

that it manages. The persistence context serves as a first level cache. An attempt to retrieve an entity object that is already managed by the EntityManager returns the existing instance from ... is one EntityManager. This section describes a level 2  (L2) cache of entity objects, which is managed
Manual
15

Storing JPA Entity Objects

and changes its state to Managed. The new entity object is stored in the database when the transaction ... managed by the EntityManager) or by commit. Referenced Embedded Objects The following code stores ... ().commit(); Managed entity objects consume more memory than ordinary non managed Java objects
Manual
15

Updating JPA Entity Objects

. If global cascade persist is enabled all the reachable entity objects that are not managed yet are also persisted. Automatic Change Tracking As shown above, an update is achieved by modifying a managed ... to managed entities automatically. One way to detect changes is to keep a snapshot of every managed object
JDO Doc
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javax.jdo.PersistenceManager

to manage the life cycle of PersistenceCapable instances. A PersistenceManager is obtained from ... JDOUserException if the instance is transient or is managed by another PersistenceManager. Parameters: pc ... > persistenceCapableClass, boolean subclasses) The PersistenceManager manages a collection of instances
Manual
14

Database Connection using JPA

. An EntityManagerFactory is constructed for a specific database, and by managing resources efficiently (e.g ... the content of a database require active transactions. Transactions are managed by an EntityTransaction ... ) must be performed within an active transaction. The EntityTransaction interface represents and manages database
FAQ
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What is ObjectDB?

ObjectDB is an Object Oriented Database Management System (ODBMS). It provides all the standard database management services (storage and retrieval, transactions, lock management, query processing, etc.), but it uses an object oriented model to store and manage data. You can easily store ordinary
Manual
12

Database Explorer

ObjectDB Database Explorer is a visual GUI tool for managing ObjectDB databases. It can be used ... manages an active transaction for every open database file. All the editing operations are associated ... to manage these strings in the Explorer. This setting is relevant only in the Explorer. In
Manual
12

Database Server

ObjectDB Server is a tool that manages ObjectDB databases in a separate dedicated process, making ... script to run and manage the server. A sample script, server.sh, is included in the bin directory ... by an icon in the Windows Tray. Right click the icon and use the context menu to manage the server