Question
Consider the following tables: REGION( REG_CODE , REG_DESCRIPTION, REG_LOCATION) STORE( ST_CODE , ST_NAME, ST_MANAGER, REG_CODE) For the tables given above, work on the problems below:
- Consider the following tables:
REGION(REG_CODE, REG_DESCRIPTION, REG_LOCATION)
STORE(ST_CODE, ST_NAME, ST_MANAGER, REG_CODE)
For the tables given above, work on the problems below:
4. For one of the tables, give examples of a superkey and a secondary key.
5. For the given tables, explain how entity integrity and referential integrity could be violated. Give specific examples.
6. Use Visio to create a detailed Crow's Foot ERD. The diagram must include all entities, attributes, and relationships. Primary keys and foreign keys must be clearly identified on the diagram.
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Introduction To Data Mining
Authors: Pang Ning Tan, Michael Steinbach, Vipin Kumar
1st Edition
321321367, 978-0321321367
