Question

Web page, customers select a genre of music from a drop-down list. The Web page uses Ajax to gain a list of performers, musicians, or groups that match genre that is formatted as a drop-down list. When a selection is completed from the performer's drop-down list, the Web page uses Ajax to display a third drop-down list displaying all of the CDs or other works of the performer. When a CD is selected, the Web page uses Ajax to obtain all songs on the CD in a fourth drop-down list. The viewer could make multiple selections. When Add to Shopping Cart image is clicked, the songs are added to the shopping cart. The viewer might change any of the drop-down lists to select additional sheet music, and the procedure is repeated. Requirements-

1. Write down a use case description for Browse Music Score use case, representing this activity,

2. Illustrate a sequence diagram using boundary, control, and entity classes for the Music score Web page.

3. Write a list of messages, names, and the parameters, along with the data types, that would be passed to the classes and the values (with data types) that are included with the return message. Make any assumptions you require about the data

4. generate a class diagram for the entity classes used in sequence diagram