US Patent 10437795 Upgrading systems with changing constraints

Methods, systems, and computer-readable storage media for determining at least one constraint that is to be changed as a result of a maintenance procedure that is to be performed on an application that interacts with a database system, identifying a data value of a table stored in the database as violating the at least one constraint, the table having a start release structure, moving a data object including the data value to a quarantine table that include the start release structure, editing the data value within the quarantine table to provide an edited data value that does not violate the at least one constraint, and moving the data object including the edited data value to the table, after the maintenance procedure has been performed.