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

 

Defining the system directory

You define the system directory when Derby starts up by specifying a Java system property called derby.system.home.

If you do not specify the system directory when starting up Derby, the current directory becomes the system directory.

Derby uses the derby.system.home property to determine which directory is its system directory - and thus what databases are in its system, where to create new databases, and what configuration parameters to use. See the Derby Reference Manual for more information on this property.

If you specify a system directory at startup that does not exist, Derby creates this new directory - and thus a new system with no databases-automatically.

Related concepts
 

javadb@jdbcurl.com