Object-Oriented Database - General Questions

1.

The Object Query Language is which of the following"?

A.	Similar to SQL and uses a select-from-where structure
B.	Similar to SQL and uses a select-where structure
C.	Similar to SQL and uses a from-where structure
D.	Not similar to SQL

Answer: Option A

Explanation:

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2.

Using OQL, you may do which of the following?

A.	Return an entire collection of elements including duplicates.
B.	Return a collection of elements without duplicates.
C.	Return a specific subset of elements using a given criteria.
D.	All of the above.

Answer: Option D

Explanation:

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3.

A relationship should be specified how in the ODL?

A.	One direction starting with the first class
B.	One direction starting with the second class
C.	Neither direction.
D.	Both directions.

Answer: Option D

Explanation:

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4.

Which of the following is an ordered collection of elements of the same type?

A.	Set
B.	Bag
C.	List
D.	Dictionary

Answer: Option C

Explanation:

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5.

Which of the following is true concerning the following statement: class Manager extends Employee

A.	Manager is a concrete class and a superclass.
B.	Manager is a concrete class and a subclass.
C.	Manager is an abstract class and a superclass.
D.	Manager is an abstract class and a subclass.

Answer: Option B

Explanation:

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6.

Which of the following is an unordered collection of elements that may contain duplicates?

A.	Set
B.	Bag
C.	List
D.	Dictionary

Answer: Option B

Explanation:

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7.

The reserved word enum is used for which of the following?

A.	To define a range for an attribute.
B.	To define a range for a class.
C.	To define a range for a relationship.
D.	All of the above.

Answer: Option A

Explanation:

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8.

Which of the following is true concerning an ODBMS?

A.	They have the ability to store complex data types on the Web.
B.	They are overtaking RDBMS for all applications.
C.	They are most useful for traditional, two-dimensional database table applications.
D.	All of the above.

Answer: Option A

Explanation:

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