A good reference text--
Bioinformatics: Fundamental Concepts of Bioinformatics.
Krane and Raymer, Benjamin Cummings (Addison Wesley).
A reference text for data integration
Bioinformatics: Managing Scientific Data.
Edited by Zoe Lacroix and Terence Critchlow, Morgan Kauffman, 2003.
A research report
Data Management for the Biosciences,
Report November 2003 of the NSF/NLM Workshop
of Data Management for Molecular and Cell Biology, Feb. 2-3, 2003.