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Tutorial
4

Step 5: Design a BIRT Report Chart

the [Select Chart Type] tab select Tube as the chart type and click Next. In the [Select Data] tab ... with the real data: In the next step we will add a table view of the same data to the report.
FAQ
4

What is the Java Persistence API (JPA)?

) is that in JPA data is represented by classes and objects rather than by tables and records as in JDBC. Using plain old Java objects (POJO) to represent persistent data can significantly simplify database ... are Object Relational Mapping (ORM) tools. The mapping bridges between the data representation in
Tutorial
4

Step 1: Install BIRT and ObjectDB Driver

We start by installing the BIRT development environment and the ObjectDB data source driver ... , and finally approving the installation and restarting the IDE. Installing the ObjectDB Data Source Driver To install the ObjectDB data source driver for BIRT: Open the [Install] dialog box by selecting Help
JDO Doc
4

javax.jdo.PersistenceManager

1.0 void deletePersistent(Object pc) Delete the persistent instance from the data store. Delete the persistent instance from the data store. This method must be called in an active transaction. The data store object will be removed at commit. Unlike makePersistent, which makes the closure
Manual
3

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
3

Comparison in JPQL and Criteria API

) expressions: c.president == null c.president != null Comparable Data Types Comparison is supported for values of the following data types: Values of numeric types, including primitive types (byte, short
Manual
3

Database Connection using JPA

of the database file on the server, relative to the server data root path. Connection URL Parameters ... is very useful in tests. However, to avoid the risk of losing data - the drop parameter is ignored
Manual
3

DELETE Queries in JPA/JPQL

an alternative way for deleting entity objects. Unlike SELECT queries, which are used to retrieve data from the database, DELETE queries do not retrieve data from the database, but when executed, delete specified
Manual
3

General Settings and Logging

data, such as query results that contain millions of objects. The element specifies temporary ... for data that exceeds a limit size that is specified by the threshold attribute. The mb and kb suffixes
Manual
3

Index Definition

; : } Indexes in Queries ObjectDB manages a BTree for every index. A BTree is an ordered map data structure ... , but might be still more efficient than iteration over the entities data. A composite index on fields x and y