1. A computer-implemented method of updating a computer program, the method comprising: obtaining an identification of a plurality of record related to a data structure, the plurality of records being effected in the updating of the computer program, the data structure being accessible by the computer program; receiving a request during the updating of the computer program to access a further record related to the data structure; determining whether the further record in the request matches at least one of the plurality of records effected in the updating of the computer program; and preventing the request from accessing the further record based on the determination of the further record matching the at least one of the plurality of records.