Empress Embedded Database is a relational database management system that has been embedded into applications, including medical systems, network routers, nuclear power plant monitors, satellite management systems.Empress Offers an Effective Embedded Database Solution by Craig S. Mullins 2005. Retrieved on Jan 26, 2010. Empress is an ACID compliant relational database management system (RDBMS) with two-phase commit and several transaction isolation levels for real-time embedded applications.Empress Product Profile p.11, 2009. Retrieved on Jun 1, 2010. It supports both persistent and in-memory storage of data and works with text, binary, multimedia, as well as traditional data.List of Supported Data Types Retrieved on Jun 1, 2010.
History The first version of Empress was created by John Kornatowski and Ivor Ladd in 1979 and was originally named MISTRESS. It was based on research done on "MRS: A microcomputer database management system" at the University of Toronto, which was published by the Association for Computing Machinery in SIGSMALL SIGMOD 1981."MRS: A microcomputer database management system", 1981. Retrieved on Jan 26, 2010. The commercial version was one of the first available relational database management systems (RDBMS) and was named Empress. Its first customer ship was in early 1981. Empress was the first commercial database to be available on Linux. Its Linux release dates back to early 1995.“EMPRESS RDBMS VERSION 6.6 FOR LINUX OS READY TO SHIP”, May 1, 1995. Retrieved on Jan 26, 2010.“Linux Commercial HOWTO”, v5.38, March 7, 1999. Retrieved on Jan 26, 2010.
API and architecture Empress supports many application programming interfaces in several programming languages. The C programming language has the most APIs including the low-level kernel MR Routines, Embedded SQL, MSCALL and ODBC. There are also APIs for C++ and JAVA. The layered architecture design provides levels of system optimization for application development. Applications developed using these APIs may be run in standalone and/or server modes.Empress APIs Retrieved on Jun 1, 2010.
Product features
Kernel API SQL API Standalone and/or Server Mode ODBC Client/Server and Local Access Fast Bulk Data Handling (BLOBs) Bulk Chunks Unlimited Attributes File Indices Persistent Stored Modules Triggers Stored Procedures No Pre-Partitioning required Referential Constraints Range Checks Micro-Second Time Stamps Layered Architecture Text Search Index Spatial Search Index Cancel Functionality Hierarchical Query ADO.NET Data Provider JDBC Interface C++ APIs Database Encryption 64 BIT Operating System Versions UTF-8 UNICODE & National Language Support Replication Server Time-out Function
Supported platforms Empress runs on all major Android,"Empress SDK for Android" Retrieved on Feb 16, 2011. Linux-, Real-Time- and Windows-supported platforms:Supported Platforms Retrieved on Jun 1, 2010. Android"Empress SDK for Android" Retrieved on Feb 16, 2011. BlueCat Linux Debian Fedora HP-UX Linux LynxOS RTOS MontaVista Linux Red Hat Linux Solaris Suse Linux Ubuntu Unix VxWorks Windows
References
External links
Product Reviews: Empress RDBMS and Just Logic by Rob Wehrli