Abstract: A system and method for ensuring the security and integrity of applications and databases. The present invention provides a user management system which allows permissive access to applications and stored procedures using a directed acyclic graph structure which allows users or groups of users to have the capability to access the desired applications and stored procedures. Also provided is a version control management system which ensures a user is using the desired or current version of an application and also provides a framework for a developer to develop an application and install it on the system.

Abstract: A method and apparatus for validating data entered into a data processing system. A plurality of windows is provided, each including at least one widget area into which data is entered by the user. A "doda object" is associated with each widget and contains keys identifying where the data is to be stored in a database, as well as member functions which operate to format the entered data for storage and format information retrieved from the database for display in the widget. During the validation procedure, all of the data associated with each of the widgets in a window are first examined for errors in conjunction with its associated doda object. In addition, a second validation step is performed in which the data associated with certain widgets are compared to those of other widgets in the window, in accordance with an algorithm selected by the user, to detect the presence of errors resulting from data entered inconsistently between widgets.