Chapter 5 Data and Process Modeling Part 1

This video discusses Data and Process Modeling as is pertains to systems analysis and design. This first part covers Data Flow Diagrams, decomposition, leveling, and the symbols used to create them

[alirulz]

Thankyou for preparing and giving this lecture!

[merimesh]

thank you so much for doing this video i was having hard time understanding this chapter you hhelp me alo

[nakazzihadijjah]

The following are the details of the process documented through an exams handling information system.

(i)Candidate submits an official registration form for an examinations purpose at a definite or stated date including the examinations centre.

(ii)The exams clerk checks to ensure the exam is actually being held at a specified date and centre. Where there is doubt, the candidate receives back the registration form.

(iii)If it is okay, the exams clerk inputs the candidate’s particulars into the computer system. The system then automatically assigns the next accessible or available registration number to the registered candidate, and the last number allocated or assigned on the CANDIDATE–file-plus one.

(iv)The examinations clerk inputs the mandatory exams date and centre. The system assigns a seat number accordingly to that candidate for example (from the previous seat number and in that centre on a specified date-plus one).

(v)Candidate details (name, centre, number, examination date, address and seat number) are subsequently stored or kept on a CANDIDATE file. The details are printed out and then sent to the destination of the candidate.

Required:

(a)Construct a suitable process model (for example, a Data Flow Diagram, or Entity Relationship Diagram, or a flowchart) for the above business requirement.

(b)Provide the explanatory key to the model for the user to understand the notation.

(c)Pinpoint two questions the systems analyst should ask in order to improve the accuracy of your model. Explain the reason for asking eachof the questions.

Please help me out

[aqctaki]

can i have the power point presentation? thanks please do send to me