CS351HW5-Fall2009

CS351HW5-Fall2009 - CS 351 DATA ORGANIZATION AND MANAGEMENT...

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1 CS 351 DATA ORGANIZATION AND MANAGEMENT HOMEWORK V Date Given : December 18, 2009 Date Due : December 29, 2009 Important Notes: 1. Please submit the Homework to Room EA 231 on the due date by 5:00 pm (no late submission will be accepted). 2. Answer the following 4 question in the order they are given using a standard size paper. 3. Handwritten submissions are accepted, a word document is preferred. 4. Staple all papers and write your name on them. 1 . Consider the Entity Sets representing Climbers and Mountains CLIMBERS (SSN , CNAME, NATIONALITY) MOUNTAINS (MNAME , ALTITUDE, COUNTRY) Climbers climb Mountains and Mountains are climbed by climbers. Model the following situations by E/R (ER) Diagrams. Introduce a Relationship Set called CLIMBED and additional Relationship Set(s) as needed in answering the following: a. A CLIMBER may climb any number of mountains (but at most once each) at a particular date and a MOUNTAIN maybe climbed by zero or more climbers.
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CS351HW5-Fall2009 - CS 351 DATA ORGANIZATION AND MANAGEMENT...

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