1. A computer readable medium having stored thereupon: logic configured to receive a code of a computer program; logic configured to divide the code into a plurality of parts; logic configured to store the plurality of parts, each in a separate record of a database; logic configured to modify a member of the plurality of parts to produce a modified instance of the member from an original instance of the member; logic configured to store the modified instance in the database; and logic configured to alternatively select the original instance or the modified instance using a database query.