Hp Integrity NonStop J-Series Manuel d'utilisateur télécharger pdf (Page 244)

Sample Project-Tracking System

Identifying the Files to be Accessed by Each Application

6. "Event-revised"--an application that allows an employee to

revise information about a particular event

Identifying the Files to be Accessed by Each Application

Having identified the applications, make a rough sketch of the

screens that are to be displayed by each, using a box to

represent each file to be accessed by the application. In the

sketch of the PROJECT-ENTRY screen, for example, you would

include a box for the following files: "projects," "events," and

"employs."

Next, determine the kinds of operations that the application will

need to perform. Since a project manager using the

"project-entry" application might need to delete, insert, or

update information in the "projects" and "events" files, this

application requires the ability to perform all of these

operations. On the other hand, a project manager needs only to

read information from the "employs" file. Therefore, the

"project-entry" application requires only read access to this

file. If you need to limit the kinds of operations that an

application can perform on a particular file, include this

information in your rough sketch of the application's terminal

screen.

Figure 12-10 shows rough sketches of the screens for the project-

tracking system.

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Hp Integrity NonStop J-Series Manuel d'utilisateur Page 244