An information system having one or more computer program modules and a database, the database containing domain data that defines entities upon which the computer program modules operate, each of the one or more computer program modules in communication with the database and accessing data from at least a portion of the database, a method of reconfiguring the domain data comprising the steps of: (a) identifying a portion of the domain data to be reconfigured; (b) developing a change set which includes modifications to the identified domain data; (c) implementing the change set; (d) preventing the one or more computer program modules from accessing the identified domain data until the implementation is complete.