What is the Difference Between

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What is the difference between "information" and "data"?

Mark for Review (1) Points Data is held and understood only by users. Information is held and understood only by users. Information and data have no differences - they are two words for the same thing. Data turns into information when it is stored in a database and accessed by systems and users. (*) Correct

2. Consider your school library. It will have a database with transaction details of which student borrows which books. Is details of the total number of books out on loan in one given month Data or Information? Data Information (*) Both Neither Correct 3. Databases were invented in 1989? True or False?

Mark for Review (1) Points

Mark for Review (1) Points

True False (*) Correct 4. Software cannot operate without Hardware. True or False? True (*) False Correct Mark for Review (1) Points

5. Once you have learned how to write programs and build systems, you no longer need any input or involvement from any users, as you are perfectly capable of delivering the systems the business needs and wants. True. All that perfect systems need are correct programs. False. Business requirements can and will change. For instance new legal requirements may arise. (*) True. All users do is delay systems delivery with their forever changing minds and new requirements. True. Users never know what they want anyway, so building systems are best left to the professionals. Correct 6. The first step in system development is to document the requirements. Why? Wrong. A blueprint for the database design is not needed. We can just start coding straight away. It clarifies what a business wants to accomplish, and provides measures for deciding if the system delivers all that is required. (*) It allows application development to be conducted without having to consider database design. It keeps businesses honest. Correct Section 2 7. All of the following could be attributes of an ENTITY called PERSON except one. Select the incorrect one: Haircolor Weight Gender Natacha Hansen (*)

Mark for Review (1) Points

Mark for Review (1) Points

Mark for Review (1) Points

Correct 8. The entity/relationship model is created before the physical database design model? True or False? True (*) False Correct 9. An entity can have many Unique Identifiers. True or False? True (*) False Correct 10. Primary Unique Identifiers: (Choose Two) Mark for Review (1) Points Mark for Review (1) Points Mark for Review (1) Points

(Choose all correct answers) Are required. The data model is not complete until all entities have a Primary UID. (*) Distinguish each instance of an entity from all others. (*) Are not required. Can be created multiple times for an entity. Correct Page 1 of 5

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