Which of the following definitions applies to all types of databases?
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Correct Answer:
C
Q: 2
The exhibit shows a relation for a companys projects. Which candidate key(s) would best
serve as the primary key for this relation?
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Correct Answer:
D
Q: 3
Consider the Registration relation shown in the exhibit. Which of the following SQL
statements would return the Registration2 relation from the Registration relation?
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Correct Answer:
C
Q: 4
Consider the following relations shown in the exhibit. Which of the following SQL statements would
return the Customers2 relation from the Customers relation?
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Correct Answer:
C
Q: 5
Which of the following best describes the ON DELETE CASCADE referential integrity
constraint?
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Correct Answer:
A
Q: 6
What is the highest normal form of the relation(s) shown in the exhibit?
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Correct Answer:
C
Q: 7
What is the highest normal form of the relation(s) shown in the exhibit?
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Correct Answer:
D
Q: 8
Consider the following database information:
domain s_id: integer
domain grd: fixed length character string length 1
STUDENT_GRADE(
Student_Number: s_id NOT NULL
Grade: grd )
Primary Key Student_Number
During which phase of the database design process would this information be developed?
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Correct Answer:
A
Q: 9
Consider the relation shown in the exhibit. Which of the following SQL statements would
properly add information for a new employee?
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Correct Answer:
D
Q: 10
In a relational database, which term describes a single table consisting of rows and columns?
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Correct Answer:
C
Q: 11
Which type of dependency occurs when one attribute of a composite primary key is removed
and the dependency still exists?
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Correct Answer:
D
Q: 12
What is the highest normal form of the relation(s) shown in the exhibit?
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Correct Answer:
A
Q: 13
Consider the entity-relationship (ER) diagram shown in the exhibit. What do the characters at
the ends of the connecting line indicate?
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Correct Answer:
B
Q: 14
Which subset of Structured Query Language (SQL) is used to create and name database
entities?
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Correct Answer:
C
Q: 15
Which of the following is a characteristic of the three-tier database architecture?
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Correct Answer:
B
Q: 16
Which three pieces of information did
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Correct Answer:
D
Q: 17
Which mechanism provides database users with controlled access to the database through the
use of virtual tables?
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Correct Answer:
A
Q: 18
What is the most important service provided by a database management system?
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Correct Answer:
A
Q: 19
Which security technique limits access by unauthorized users to parts of an enterprise
database?
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Correct Answer:
A
Q: 20
Consider the symbols shown in the exhibit. Which of the following correctly identifies these
symbols when used in an entity-relationship (ER) diagram?