US Patent 7606820 Detecting and handling changes to back-end systems

The description includes methods and apparatus, including computer program products, for detecting and handling changes to back-end systems. Configuration data for a pattern is received. The pattern includes a predefined arrangement of user interface elements and specifies predefined actions that can be performed using the user interface elements. The configuration data includes a first version identification and specifies associations between one or more of the user interface elements and one or more entities in a back-end system. The back-end system is accessed and a second version identification is obtained. If the first version identification does not match the second version identification, the configuration data is modified based on information about the back-end system.