Brookhaven Protein Data Bank a database and format of files, which describe the 3D structure of a protein or nucleic acid, as determined by X-ray crystallography or nuclear magnetic resonance (NMR) imaging. Protein Data banks are semi structured data A Table contains collection of record. Record contains collection of fields. The data schema is inspired by a combination of graph based methods, generalized data structures, ontology and meta-data. A data warehouse is a subject oriented, integrated, time variant and nonvolatile collection of data in support of management’s decision making process.