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Ex7-Maintaining Data (Wan Nurin Shuhada)

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1.  Explain why database design is important

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1.  Explain why database design is important

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ans: Database design is important because it focus on design of database structure that will be used to store and manage end-user data.

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2. What are the problems exist with the file system data management? Discuss Two (2) of them.

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2. What are the problems exist with the file system data management? Discuss Two (2) of them.

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ans: 1) The security features difficult to program because it often omitted in file system environments.

2) Difficult to make changes to existing structures.

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Test_ Chapter 1_ INTRODUCTION TO DATABASE SYSTEM _ Quizlet

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Ex2-Retrieving Data From Multiple Tables (WAN NURIN SHUHADA)

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Ex6-Using Subqueries (WAN NURIN SHUHADA)