OraCIF COMPARER  is currently under development and is designed specifically for facilitating the exchange of macromolecular structural data  between the EBI and the RCSB. The Comparer compares the contents of an mmCIF or XML document   with the source database(s). 

Provided with a mmCIF or XML  document containing information on a given PDB accession code the Comparer will analyse the differences between this document and the information in the source database pertaining to this same accession code.

This function is important for synchronising the cleanup of the PDB being undertaken at the EBI and the RCSB.

INPUT 

The Comparer requires only mmCIF or XML document containing structural data corresponding to a single PDB entry. The set of categories and items to be compared can be controlled by setting flags in the mapping metadatabase.

PROCESS

The mmCIF or XML document presented for comparison is first loaded into temporary set of tables. The equivalent data from source database(s) is then extracted into a second temporary set of table using the Exporter.  Then the differences between theses two set of temporary tables  are analysed.

Currently, the analysis is done only category by category and does not evaluate the relationship between categories.

OUTPUT

COMPARER provides item by item diagnostics on the differences between the mmCIF or XML input and the source database(s).