+1-415-670-9189
info@expertsmind.com
Draw e-r diagram which models online bookstore
Course:- Software Engineering
Reference No.:- EM1349773




Assignment Help
Assignment Help >> Software Engineering

Q1) Draw the E-R diagram which models an online bookstore.

a. List the entity sets and their primary keys.

b. Suppose the bookstore adds music cassettes and compact disks to its collection. The same music item may be present in cassette or compact disk format, with differing prices. Extend the E-R diagram to model this addition, ignoring the effect on shopping baskets.

c. Now extend the E-R diagram, using generalization, to model the case where a shopping basket may contain any combination of books, music cassettes, or compact disks.




Put your comment
 
Minimize


Ask Question & Get Answers from Experts
Browse some more (Software Engineering) Materials
Elabote on how applying a mixed-source methodology overcomes the disadvantages of a single-source methodology. Elaborate on how applying a mixed-source methodology enhan
Plan the testing required for the system. You should consider unit, integration, and system testing in your test plan and determine who should participate in the testing.
ITEC-8130-1: Create a program that fulfills the specifications outlined in the scenario above. Use the concept of inheritance to allow for later additions to the program. Al
Assume we evaluate following expressions: (define pizza (make-thing 'pizza robot-lab)) (ask pizza 'set-owner holly). Sketch environment diagram, illustrating full structure of
What is EV(IB, IC), the expected value of payoff under this level of imperfect information - Compute the expected value with perfect information (EV perfection information) an
In this exercise, produce the XSL file needed to associate with the attached XML file to display the XML data in a format similar to the data shown in an unrelated invoice i
How can project leader find what user wants and needs. Point about observing the user is important step in gaining good understanding of the users needs.
Determine at least 10 ambiguous requirements (semantics, lexical or structural) examine those needs and rewrite those requirement clearly.