1. A method for operating a server comprising a processor for automatically generating an end-user interface for working with the data within a relational database defined within a relational DBMS whose data is stored in machine-readable media and which is accessible to said server, wherein said relational database comprises a plurality of tables, constraints and relationships stored in said DBMS in accordance with a data model comprising said tables and their column-complements and datatypes, said constraints, and the relationships across said tables, and wherein said relational database may be of any arbitrary size or complexity, said method comprising (a) providing an output stream from said server, for user display and input devices, defining a user interface paradigm comprising a set of modes for interacting with a given database table, said modes comprising create, retrieve, update and delete, and a corresponding display format for each mode; (b) causing said server to scan said database and apply a body of rules to determine the table structures, constraints and relationships of said data model, and store representations thereof in machine-readable media accessible to said server; and (c) causing said server to use said representations to construct a corresponding client application for access through said user display and input devices, wherein said client application provides a connection to said database, provides displays of the table contents of said database for each of said modes in accordance with the display formats of said paradigm, integrates into each said mode display processes for representing, navigating, and managing said relationships across tables, for selecting among said modes, and for navigating across said tables and interacting in accordance the selected mode with the data in the tables that are reached by said navigation, while observing and enforcing relational interdependencies among data across said tables.