Abstract: The system for maintaining the integrity of application data functions to provide a mechanism to generate safe and efficient database transactions. This is accomplished by minimizing the number of constraints applied to the data stored in the database by segmenting the database into two portions: a set of base data objects and a set of view data objects. The base data objects comprise a set of data that is normalized to reduce the need for complex integrity checks. The set of view data objects represents views of the base data objects as presented in a form needed by the various applications extant in the processor. The system for maintaining the integrity of application data enables the applications to access both the view data objects the base data objects, but to effect a change in the data contained therein, access via an integrity checking process is only provided to the base data objects.

Abstract: A system for validating network communication, such as e-mail. A person sending information to a previously unverified recipient first enters “Address Book” information about the unverified recipient into the sender's e-mail system. Part of this initial information includes the recipient's e-mail address and a way of communicating with the intended recipient other than by using the e-mail address. For example, regular mail, fax, or other means can be specified. When the sender sends the information to the intended recipient, the recipient is not able to receive the information until an identification code is entered by the intended recipient. The identification code is transferred via the different way of communicating that does not use the intended recipient's e-mail address. For example, the code can be sent via fax. The intended recipient then logs on to the e-mail system and enters their user name and the code.