Describe the interrelationship between process and data models and the CRUD matrix.
The CRUD (create, read, update, delete) matrix is a
table that depicts how the system processes data. It is
helpful to develop the CRUD matrix on the basis of the logical process and data
models and then revise it later in the design phase. The matrix also provides important information for program specifications, because it shows exactly how data are created and used by the major processes in the system.