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Microarray technology has become one of the most important functional genomics technologies. A proliferation of microarray databases has resulted. It can be difficult for researchers exploring this technology to know which bioinformatics systems best meet their requirements. In order to obtain a better understanding of the available systems, a survey and comparative analysis of microarray databases was undertaken. The survey included databases that are currently available, as well as databases that should become available in early 2001. Databases fall into three categories: (i) those that can be installed locally, (ii) those available for public data submission and (iii) those available for public query. Developers of microarray gene-expression databases were asked questions regarding the scope and availability of their database, its system requirements, its future compliance with MGED (Microarray Gene Expression Database) standards, and its associated analytical tools. Participants included AMAD (Stanford/Berkeley/UCSF), ArrayExpress (EBI), ChipDB (MIT/Whitehead), GeneX (NCGR), GeNet (Silicon Genetics), GeneDirector (BioDiscovery), GEO (NCBI), GXD (Jackson Laboratory), mAdb (NCI), maxdSQL (University of Manchester), NOMAD (UCSF), RAD (University of Pennsylvania) and SMD (Stanford University). Other database developers were contacted but data was not available at the time of manuscript preparation. Each database fulfils a different role, reflecting the widely varying needs of microarray users.
Margaret Gardiner‐Garden (Mon,) studied this question.