Object - Oriented Database Questions and Answers

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Q1
ODL supports which of the following types of association relationships?
  • A Unary
  • B Unary and Binary
  • C Unary and Binary and Ternary
  • D Unary and Binary and Ternary and higher
Answer: Option B
Q2
An extent is which of the following?
  • A A keyword that indicates that the subclass inherits from a superclass
  • B A keyword that indicates that the superclass inherits from a subclass
  • C The set of all instances of a class within a database
  • D Only one instance of a class within a database
Answer: Option C
Q3
 Identify the class name for the following code: ABC123 course();
  • A ABC123
  • B course
  • C course()
  • D All of the above.
Answer: Option A
Q4
Using ODL, you can define which of the following?
  • A Attribute
  • B Structure
  • C Operation
  • D All of the above.
Answer: Option D
Q5
The keyword "inverse" is used in which of the following?
  • A Class
  • B Attribute
  • C Relationship
  • D All of the above.
Answer: Option C
Q6
The object definition language (ODL) is which of the following?
  • A Used to develop logical schemas
  • B A data definition language for OODB
  • C A method to implement a logical schema
  • D All of the above.
Answer: Option D
Q7
An atomic literal is which of the following?
  • A Strings
  • B Boolean
  • C Long
  • D All of the above.
Answer: Option D
Q8
 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
Q9
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
Q10
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

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