Please give answers for these ques Topic: DATABASE AMANGEMNET SYSTEMS Choice (0p

Question

Please give answers for these ques Topic: DATABASE AMANGEMNET SYSTEMS Choice (0pts) 1) Which of the following statements about views are NOT correct: A) A view provides a mechanism to hide certain data from the view of certain users B) View definition is the same as creating a new relation by evaluating the query expressio C) A view can be defined using the create view statement D) Once a view is defined, the view name can be used to refer to the virtual relation that th generates 2) Which of the following is NOT an advantage of database systems? A) Redundant data B) Program-data independence C) Better data quality D) Reduced program maintenance 3 The logical representation of an organization's data is called a(n) A) database model. B) entity-relationship model. C) relationship systems design. D) database entity diagram. 4) tional and informational systems are generally separated because of which of the factors? A) A data warehouse centralizes data that are scattered throughout disparate operational makes them readily available for decision support applications. B) A properly designed data warehouse decreases value to data. A separate data warehouse increases contention for resources. C) Only operational systems allow SQL statements

Explanation / Answer

1) B View definition is the same as creating a new relation by evaluating the query expression

2) A Redundant Data

3) B entity relationship model

4) A B C

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