Home » Search

About database

171-180 of 200Refresh
FAQ
8

What are the main benefits of using ObjectDB?

performance. Reducing Development Time and Costs ObjectDB makes database programming easier and faster. The ability to store ordinary objects in the database directly can simplify the code significantly ... fields can be stored by ObjectDB simply as part of the containing object. Relational databases lack
Manual
6

Chapter 2 - JPA Entity Classes

JPA Entity classes are user defined classes whose instances can be stored in a database. To store data in an ObjectDB database using JPA you have to define entity classes that represent your application data object model. This chapter explains how to define and use entity classes. 
Manual
6

Chapter 3 - Using JPA

This chapter explains how to manage ObjectDB databases using the Java Persistence API (JPA). The first two pages introduce basic JPA interfaces and concepts: The next section explains how to use JPA for database CRUD operations: More advanced topics (e.g. locking and events) are discussed in the last section:
Tutorial
6

Eclipse/JPA Web Application Tutorial

This is the Eclipse version of the JPA Web App tutorial. It demonstrates how to create and run a database driven Java web application in Eclipse - using Tomcat 6, ObjectDB and JPA. The demo web ... entity objects are stored in an ObjectDB database. Required Software For this tutorial you will need
Manual
6

Index Definition

Querying without indexes requires iteration over entity objects in the database one by one. This may take a significant amount of time if many entity objects have to be examined. Using proper indexes ... . When an entity object is stored in the database every indexed field must contain either null or
Manual
6

JPA Named Queries

" that retrieves all the Country objects in the database: @NamedQuery(name="Country.findAll", query ... all the entity classes that have objects in the database. However, an attempt to use a named query
Manual
6

JPA Persistence Unit

elements specify general properties. JPA 2 defines standard properties for specifying database url ... only when the containing classes become known to ObjectDB, for example when a first instance of the class is stored in the database.
Manual
6

JPA Query API

, the same JPQL query which retrieves all the Country objects in the database is represented by both q1 ... ObjectDB. In the context of the queries above, if there are no Country instances in the database
Tutorial
6

JPA Web Application Tutorial

This tutorial demonstrates how to create and run a database driven Java web application using Tomcat 6, ObjectDB and JPA. The demo web application manages a basic guestbook page. Every visitor ... a Guest entity object and all the Guest entity objects are stored in an ObjectDB database
Tutorial
6

NetBeans/JPA Web Application Tutorial

This is the NetBeans version of the JPA Web App tutorial. It demonstrates how to create and run a database driven Java web application in NetBeans - using Tomcat 6 Apache Tomcat Server 6.0 (some ... in an ObjectDB database. Required Software For this tutorial you will need the following software