Assignment
Topics: Data Flow Diagrams/Requirements
E-R Diagram
DFD diagrams
Look at the set of DFDs created in Chapter seven for Hoosier Burger's food-ordering system. Represent the decision logic of one or more of the processes as decision tables.
What types of questions need to be asked during requirements determination in order to gather the information needed for logic modeling? Give examples.
E-R diagram
• Study the following E-R diagram
• Based on this E-R diagram, answer the following questions:
1.
a. How many PROJECTs can an employee work on?
b. What is the degree of the Includes relationship?
c. Are there any associative entities on this diagram? If so, name them.
d. How else could the attribute Skill be modeled?
e. Is it possible to attach any attributes to the Includes relationship?
f. Could TASK be modeled as an associative entity?
g. Employees earnings are calculated based on a different hourly pay rate for each project. Where on the E-R diagram would you represent the new attribute Hourly pay rate?