Quadcap Embeddable Database

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Why another database? The philosophy that motivates the QED design is that of simplicity: Let's not make things any more complicated than they need to be. Fundamentally, all a database really needs to be is a simple API (thank you, JDBC!) on a relational store (thank you, SQL!), backed by library. A small, elegant library works best.

There are many useful and interesting applications which can be developed using a relational database API, and which really don't need most of the "enterprise" features provided by other datbases. These are the applications QED was made for.

With QED, your database is simply stored as a file on your computer's hard disk; you can put it on a CDROM (or 10,000 CDROMs!), web server, email or whatever.

And, QED supports the SQL92 standard, so you won't have to convert your application (unless your old database doesn't... sorry ;-)

• Data Integrity:QED provides robust data protection and data recovery features. Committed transactions won't be lost, even if your application crashes at an "inopportune" time. Furthermore, QED makes it easy to perform online backups of your database, either based on a schedule, or at a time of your choosing.
• Data security: QED supports strong encryption, using the AES standard (Rijndael) encryption algorith with 128 bits keys. Keep your data private!
• Zero Administration: QED doesn't require a database administrator or any external configuration files. Create a database by connecting to it -- it's as simple as that! Just include the qed.jar file in your classpath and use the standard JDBC interfaces.
• Business Model: With QED, you won't have a sales critter calling you on the phone, trying to figure out what you're willing to pay, so they can give you a price. QED offers an affordable, single-price, UNLIMITED commercial redistribution license, a model unique to the industry.
• Standards compliant: QED is designed to support the SQL92 standard, and provides a very full-featured implementation, including
• Open Source: QED comes with full source code, no hidden bits here.

• QED Users's Guide

  This document explains how to install and configure QED, how to create databases and get database connections.

• QED Developer Guide

  This document explains how to configure, and administer QED, and explains the QED application development model.

• QED API Documentation

  Describes some of the database utility functions included with QED.

• QED SQL Reference

  A complete reference to the QED SQL implementation, noting especially conformance to various levels of the SQL standard, with details of "implementation defined" operations.

• QED SQL/JDBC Features Supported

  A detailed list of the SQL and JDBC features supported by QED.

• QED Change List

  Revision history and change list for QED releases

• Third-party Software

  Copyright notices for third party software.