[holding answer 3 February 2009]: The case information database uses datasets covering people’s biometric and biographical data to uniquely establish individual identity and a table of addresses using the post office address finder software, table of address links to specific individuals and a further table which describe why the link is in place. These tables help to check that address data are accurate and up to date as possible and reduce the likelihood of errors throughout the individual journey in the immigration process including deportation information.
The case information database stores multiple addresses against an applicant for a variety of different uses including correspondence, prison, place of abode, etc. These are then stored either in elements including house name, street name, county etc. or in one block if the address can not be verified against the post office finder software.
Information on any other data needs to be specific to aid response.