Jawaban MID Term Exam Semester 1 Oracle Academy English Database Design 2013-2015

Test: Mid Term Exam Semester 1 Review your answers, feedback, and question scores below. An asterisk (*) indica tes a correct answer. Section 1 (Answer all questions in this section) 1.

The purpose or function of a database is to:

Mark for

 Review (1) Points Run multiple applications on multiple client-servers Provide integrated software on fast processing servers Provide a structured way to access and manage data (*) run solely as client-based software on personal computers

[Correct]

Correct

2. The main subject areas taught by the Oracle Academy are: Mark for Review (1) Points Computer Repairs Database performance tuning Data Modeling, SQL, and PL/SQL (*) Systems programming and computer architecture

[Correct]

Correct

3. 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 sa me thing. Data turns into useful information. It is stored in a database and acces sed by systems and users. (*)

[Correct]

Correct

4. Databases are used in most countries and by most governm ents. Life, as we know it, would change drastically if we no longer had access t o databases. True or False? Mark for Review (1) Points True (*) False

[Correct]

Correct

Section 2 (Answer all questions in this section) 5. Entity and Attribute names are usually Nouns. True or Fa lse? Mark for Review (1) Points True (*) False

[Correct]

Correct

6. All of the following could be attributes of an ENTITY ca lled PERSON, except which which one? Mark for for Review Review (1) Points Haircolor Weight Gender

Natacha Hansen (*)

[Correct]

Correct 7.

Relationship names are usually verbs. True or False?

Mark for Review (1) Points True (*) False

[Correct]

Correct

8. An entity can have many Unique Identifiers. True or Fals e? Mark for Review (1) Points True False (*)

[Incorrect]

Incorrect. Refer to Section 2 Lesson 2.

9. e true? (Choose Two) (1) Points

Which of the following statements about relationships ar Mark for Review (Choose all correct answers)

They become foreign keys in the database. (*) They must be mandatory to be created in the database. They can be either mandatory or optional. (*) They must exist between two different Entities.

[Correct]

Correct

10. Which of the following entities most likely contains val id attributes? (Choose two) Mark for Review (1) Points (Choose all correct answers) Entity: Home. Attributes: Number of Bedrooms, Owner, Address, Date Built  (*) Entity: Pet. Attributes: Name, Birthdate, Owner (*) Entity: Car. Attributes: Owner Occupation, Owner Salary, Speed Entity: Mother. Attributes: Name, Birthdate, Occupation, Start Date

[Correct] Page 1 of 5

Correct