The NCBI Gene Expression Omnibus (GEO) represents the largest public repository of microarray data. However, finding data of interest can be challenging using current tools. GEOmetadb is an attempt to make access to the metadata associated with samples, platforms, and datasets much more feasible. This is accomplished by parsing all the NCBI GEO metadata into a SQLite database that can be stored and queried locally. GEOmetadb is simply a thin wrapper around the SQLite database along with associated documentation. Finally, the SQLite database is updated regularly as new data is added to GEO and can be downloaded at will for the most up-to-date metadata.
Searching the GEOmetadb database requires a bit of knowledge about the structure of the database and column descriptions. This function returns those column descriptions for all columns in all tables in the database.
A common task is to find all the GEO entities of one type associated with another GEO entity (eg., find all GEO samples associated with GEO platform 'GPL96'). This function provides a very fast mapping between entity types to facilitate queries of this type.
getBiocPlatformMap
(Package: GEOmetadb) :
Get mappings between GPL and Bioconductor microarry annotation packages
Query the gpl table and get GPL information of a given list of Bioconductor microarry annotation packages. Note currently the GEOmetadb does not contains all the mappings, but we are trying to construct a relative complete list.
providing 
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