  The XMM identification (XID) programme is accumulating Optical/IR data to
identify thousands of XMM sources at both high ($bII > 20^{\circ}$) and low
galactic latitude. X-ray sources are divided into samples on the basis of their
X-ray flux and their Galactic latitude. The XID Programme aims to identify and
classify around 1000 object in each sample. These in turn, will be used to
provide a basis for the statistical identification of the much larger pool of
serendipitous objects observed in XMM fields. The purpose of the XID database
is to underpin these projects by storing and connecting key information from
XMM XID fields and sources, together with (primarily) Optical/IR multi-colour
imaging and spectral data from the ground-based follow-up campaign. It should
shortly be able to serve as both a support tool for guiding the `ground-based`
effort, and permit collation and scientific exploitation of the results.
