In the lib folder of the apache distribution you have downloaded, you can observe jar files representing various components. Apache Derby Library/ComponentsĪpache Derby distribution provides various components. Thus, there will be a separate file for every table or index in the database. In the same way, each index of a table is also stored in a separate file. In this, data of a table will be stored in a separate file.

While storing data, Apache Derby follows a concept known as conglomerate. If Derby does not have enough disc space, it will shut down immediately. Simply loading the driver starts the database and it stops with the applications.įollowing are the limitations of Apache Derby −ĭerby does not support indexes for datatypes such as BLOB and LONGVARCHAR. Less space − Derby database has a small footprint, i.e., it occupies less space andĮmbed with Java Application − Derby provides an embedded database engine which can be embedded in to Java applications and it will be run in the same JVM as the application. Including databases − You can include pre-build/existing databases into your current derby applications. Transactional support − Derby provides complete support for transactions ensuring data integrity. No modifying data − Because of this, you can move derby databases to other machines without modifying the data.

Platform independent − Derby uses on-disc database format where the databases in it are stored in a file in the disc within the directory with the same name as the database.

Features of Apache Derbyįollowing are the notable features of Derby database − Oracle released the equivalent of Apache Derby with the name JavaDB. It is an open source database developed by Apache Software Foundation. Apache Derby is a Relational Database Management System which is fully based on (written/implemented in) Java programming language.

Derbyclient.jar netbeans download