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Question 1
0 out of 2 points
Incorrect
Which of the following is NOT true about primary keys?
Answer
Selected Answer:
Tables in a relational database are not required to have a Primary Key
*
Question 2
2 out of 2 points
Correct
Which of the following is NOT provided by a database?
Answer
Selected Answer:
Ability to compile programs
*
Question 3
2 out of 2 points
Correct
Which of the following does NOT refer to a column?
Answer
Selected Answer:
counterpart of a relation in the Relational Data Model
*
Question 4
2 out of 2 points
Correct
Which of the following is NOT a component of a relational data model?
Answer
Selected Answer:
row
*
Question 5
0 out of 2 points
Incorrect
Which of the following is NOT true about domains and data types?
Answer
Selected Answer:
A domain defines the smallest unit of data that can be stored
*
Question 6
0 out of 2 points
Incorrect
Which of the following is NOT a characteristic of normalization?
Answer
Selected Answer:
It is used to remove redundancy
*
Question 7
0 out of 2 points
Incorrect
Which of the following is NOT a characteristic of a relational model?
Answer
Selected Answer:
implemented by most DBMS in the market
*
Question 8
0 out of 2 points
Incorrect
Which of the following is NOT true about components of the Relational Data Model?
Answer
Selected Answer:
The Tuple is a set of attribute values that span across attributes.
*
Question 9
2 out of 2 points
Correct
Which of the following is NOT provided by a database?
Answer
Selected Answer:
Routing of data
*
Question 10
2 out of 2 points
Correct
Which of the following is NOT true about foreign keys?
Answer
Selected Answer:
A foreign key is required in database tables
*
Question 11
2 out of 2 points
Correct
Which of the following DOES NOT REFER TO a foreign key?
Answer
Selected Answer:
Uniquely identifies each tuple (row) of the relation (table)
*
Question 12
0 out of 2 points
Incorrect
Which of the following is NOT true about data models?
Answer
Selected Answer:
Intended for the software developer
*
Question 13
2 out of 2 points
Correct
Which of the following model is generally used as a basis for relational databases?
Answer
Selected Answer:
Relational Data Model
*
Question 14
2 out of 2 points
Correct
Which of the following is NOT true about database management systems (DBMS)?
Answer
Selected Answer:
It is the software system that manages only unstructured data
Friday, September 23, 2011 9:27:11 AM CST
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