Lab_04_AM10-13 - Solution - 7.104 DATABASE ENGINEERING I...

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WEEK 04 – AM10-13 LAB / TUT SOLUTION DATABASE DESIGN USING NORMALIZATION This laboratory / tutorial exercise aims for the student to understand and gain skills on how to design a database using normalization process. It is recommended for students to follow the order as listed below; (A)You’re given an unnormalized relation below called SKU_DATA03 to design an updateable database system, please examine the data and answer question follows SKU SKU_Description Department Buyer DeptBudgetCode 100100 Std.Scuba Tank, yellow Water Sports Pete Hansen BC-100 100200 Std. Scuba Tank, Magenta Water Sports Pete Hansen BC-100 101100 Dive Mask, Small Clear Water Sports Nancy Meyers BC-100 101200 Dive Mask, Med Clear Water Sports Nancy Meyers BC-100 201000 Half-dome Tent Camping Cindy Lo BC-200 202000 Half-dome Tent Footprint Camping Cindy Lo BC-200 301000 Light Fly Climbing Harness Climbing Jerry Martin BC-300 302000 Locking carabiner, Oval Climbing Jerry Martin BC-300 1. Put the above table SKU_DATA03 into relations satisfying the normal form of BCNF? (1) SKU → SKU_Description, Department, Buyer, DepBudgetCode (2) SKU_Description → SKU, Department, Buyer, DepBudgetCode (3) Department → DepBudgetCode (4) Buyer → Department (5) DepBudgetCode →Department The functional dependency 3 and 5 are the same so we can eliminate 5. Candidate Key can be found in the determinants of 1 and 2 so we can create new relations from 3 and 4 in addition to the original relation SKU_DATA03. 1.
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This note was uploaded on 04/03/2011 for the course ECON 7.104 taught by Professor Wei during the Spring '11 term at Faculty of English Commerce Ain Shams University.

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Lab_04_AM10-13 - Solution - 7.104 DATABASE ENGINEERING I...

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