About database

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Chapter 6 - Configuration

The ObjectDB configuration file contains one root element with seven subelements: ... <database> ... database> ... ... ... ... ...
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General Settings and Logging

database urls for use by the Explorer. The size attribute specifies the maximum size of this list ... recently used databases in the Explorer easier. The element
Tutorial
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JPA Tutorials

The following tutorials demonstrate how to develop database driven applications using JPA and the ObjectDB ODBMS (Object Oriented Database Management System). Console JPA Tutorial The Quick Start tutorial demonstrates how to use ObjectDB and JPA in a console application: Quick Start with JPA
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Eclipse/JPA Spring MVC Web Tutorial

database. Required Software For this tutorial you will need the following software: Java JDK 6.0 (or
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NetBeans/JPA Spring MVC Web Tutorial

database. Required Software For this tutorial you will need the following software: Java JDK 6.0 (or
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Spring MVC and JPA Tutorial

are stored in an ObjectDB database. This tutorial is available in the following versions: In addition, the demonstrated application is available as a Maven project:
Manual
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Retrieving JPA Entity Objects

The Java Persistence API (JPA) provides various ways to retrieve objects from the database ... of the database. The persistence context serves as a cache of retrieved entity objects. If a requested ... with data that is retrieved from the database (or from the L2 cache - if enabled). The new entity object
Manual
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Storing JPA Entity Objects

New entity objects can be stored in the database either explicitly by invoking the persist method ... an instance of the Employee entity class in the database: Employee employee = new Employee("Samuel ... and changes its state to Managed. The new entity object is stored in the database when the transaction
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Working with JPA Entity Objects

), which can represent physical objects in the database. Managing an ObjectDB Object Database using JPA ... database objects. Entity Object Life Cycle The life cycle of entity objects consists of four states ... the database. An entity object becomes Managed when it is persisted to the database
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JPA Primary Key

Every entity object that is stored in the database has a primary key. Once assigned, the primary key cannot be modified. It represents the entity object as long as it exists in the database. As an object database, ObjectDB supports implicit object IDs, so an explicitly defined primary key is not