Java DB

Apache Derby

Derby Developer's Guide

Derby Getting Started
Derby Reference Manual
Derby Developer's Guide
Derby Performance Tuning
Derby Server and Admin Guide
Derby Tools and Utilities
Derby Developer's Guide
-After installing
-Upgrades
-JDBC applications and Derby basics
-Application development overview
-Derby embedded basics
-Derby JDBC driver
-Derby JDBC database connection URL
-Derby system
-A Derby database
-Connecting to databases
-Working with the database connection URL attributes
-Using in-memory databases
-Working with Derby properties
-Deploying Derby applications
-Deployment issues
-Creating Derby databases for read-only use
-Loading classes from a database
-Derby server-side programming
-Programming database-side JDBC routines
-Programming trigger actions
-Programming Derby-style table functions
-Programming user-defined types
-Controlling Derby application behavior
-The JDBC connection and transaction model
-Result set and cursor mechanisms
-Locking, concurrency, and isolation
-Working with multiple connections to a single database
-Working with multiple threads sharing a single connection
-Working with database threads in an embedded environment
-Working with Derby SQLExceptions in an application
-Using Derby as a J2EE resource manager
-Derby and Security
-Configuring security for your environment
-Working with user authentication
-Users and authorization identifiers
-User authorizations
-Encrypting databases on disk
-Signed jar files
-Notes on the Derby security features
-User authentication and authorization examples
-Running Derby under a security manager
-Developing tools and using Derby with an IDE
-SQL tips
-Localizing Derby
-Derby and standards

 

Using Derby with IDEs

When you use an integrated development environment (IDE) to develop an embedded Derby application, you might need to run Derby within a server framework.

This is because an IDE might try connecting to the database from two different JVMs, whereas only a single JVM instance should connect to a Derby database at one time (multiple connections from the same JVM are allowed).

An "embedded Derby application" is one which runs in the same JVM as the application. Such an application uses the embedded Derby driver (org.apache.derby.jdbc.EmbeddedDriver) and connection URL (jdbc:derby:databaseName). If you use this driver name or connection URL from the IDE, when the IDE tries to open a second connection to the same database with the embedded Derby, the attempt fails. Two JVMs cannot connect to the same database in embedded mode.

 

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