KMD: An Open-Source Port of the ArrayExpress Microarray Database

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The Keck Microarray Database (KMD) is a port of the ArrayExpress database from Oracle® to the MySQL® environment. The requirements for a locally available, open-source microarray database solution based on ArrayExpress are analysed in this article. The differences between the Oracle® and MySQL® environments are identified and the method to port to MySQL® is described, providing a unified relational database management system (RDBMS) platform for both MIAMExpress and ArrayExpress.AvailabilityThe software and documentation are available from the Keck Graduate Institute of Applied Life Sciences website at Mainguy ( or David Wild (

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