You package those JAR files with your Java programs for delivery. javadoc: contains API documentation of Derby. docs: contains official Derby documentation (in both HTML and PDF). demo: contains demonstration programs with Java code. bin: contains script files (.bat files on Windows) for executing utilities and setting up the environment. At the time of this writing, the current version of Derby is 10.14.1.10 which is for Java 8 or higher.You can see there are 4 different distributions, and choose the bin distribution that contains the documentation, Javadoc, and JAR files for Derby.Extract the downloaded file (in zip or tar.gz format), and you see the following directories: Click the Download menu to choose a version. The home page of Apache Derby project is. To use Derby, you must download the distribution and extract the package. However from Java 9, Derby is no longer distributed with JDK, hence we use the brand name Apache Derby instead of JavaDB. In 2004, IBM contributed the code to Apache Software Foundation and it is renamed to Apache Derby till now.Derby was included in JDK from Java 6 under the name JavaDB. And in 2001, IBM acquired this database of Informix and re-branded it to IBM Cloudscape. developed a Java database engine called JBMS. History of Apache DerbyIn 1997, Cloudscape Inc. That means your Java applications are still “Write once, run everywhere” with Derby.Yet to mention, OracleDB, MySQL, Microsoft SQL Server… are all quite complex in installation, configuration and administration.Ģ. Imagine you can embed an entire RDBMS with few megabytes into your application, without the need of installing and configuring the database at the end user’s machine.Unlike heavier RDBMSs like OracleDB, MySQL, Microsoft SQL Server… which needs different distributions for different operating systems, Derby is cross-platform independence as it is implemented entirely in Java. Derby is easy to install, deploy and use with minimum administration.Therefore, Derby is very ideal for Java applications that require only small or medium database. Derby is a full-featured RDBMS that support SQL standard, transactions, locking, security… despite of its small footprint. You can also use network client/server mode with Derby. Derby is embeddable in Java applications, thanks to its embedded JDBC driver. That means it is portable across different operating systems like Java. Small footprint: with only 5.7MB of all JAR files, Derby is very lightweight, consumes little memory and runs fast. Derby is being developed by Apache Software Foundation - a non-profit organization which is very well known for its widely used open source products like Ant, Maven, Tomcat and many other Java libraries.Derby has the following advantages: What is Apache Derby, and why Use it?Apache Derby is an open source relational database implemented entirely in Java. As a Java programmer, you should understand and be able to use this database as it simplifies development and deployment of Java applications with small or medium database. In this Apache Derby tutorial, you will learn fundamentals around Derby and how to use it under the perspective of a database user.
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