Access to a networked application can be provided to multiple users while allowing user-specific extension fields to be created and maintained for exclusive access by the user creating the extension field. A user-customized data object that includes a standard field value of a standard field of a standard data object defined by the networked application and a user-specific extension field value of a user-specific extension field that modifies operation of the networked application for the user and that is not available to other users of the plurality of users can be received from a user for writing to memory. The user-specific extension field value can be separated from the standard field value. The standard field value and the user-specific extension field value can be persisted in a first database table and a second database table, respectively. Related systems, methods, and articles of manufacture are also provided.