Student Examination Management System ADO Edition

In the past under the Delphi to do data processing, VC ADO in the sense of more trouble, so try to refer to others ADO class encapsulated two classes, the original class for Carlos Antollini two ADO class, version 1.2 (VC Knowledge Base has downloaded), modified a bit, Then inherited a Cadostorage class, and saw Liu Yongxu teacher "A simple student performance management program," want to redesign their own ideas, and then wrote this small system: the interface structure of the current data processing software commonly used MDI form, as shown in figure I:

Figure A program run screen

I designed this system in accordance with the requirements analysis, database design and a class of ideas, the following from three major aspects (database design, class design, programming implementation) analysis of my design ideas:

A Database diagram:

I am using an Access database, for each table is basically based on the E-R relationship model design, table structure and diagram as shown in Figure II:

Figure II Database diagram

Two. Class structure diagram

A part of Rose's design, which was then programmed to be built with Rose's reverse engineering, basically includes all the classes now in use and their associations, as shown in Figure three:

The association relationship between the three classes of graphs