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Q1. The exhibit shows a relation for a company projects. Which candidate key(s) would best serve as
the primary key for this relation?
A. S_Date and E_Date
B. ProjJD
C. ltem_Num and E_Date
D. Proj_ID and Item_Num
Answer: D
Q2. To create a view, what are the minimal privileges that a user must have for the relations used to make the view?
A. GRANT
B. REVOKE
C. SELECT
D. CREATE VIEW
Answer: C
Q3. Which database architecture is best suited to implementation in the World Wide Web
environment?
A. Two-tier using thin client
B. Three-tier using fat client
C. Three-tier using thin client
D. Centralized mainframe with terminal client
Answer: C
Q4. Which of the following definitions best describes an entity?
A. A relation
B. Data about data
C. Data stored in a table column
D. An item about which information is stored
Answer: D
Q5. Which type of relational integrity is violated if a primary key in a database has a null value?
A. Entity integrity
B. Domain integrity
C. Domain constraints
D. Referential integrity
Answer: A
Q6. Consider the Information Engineering diagram in the exhibit showing the relations BUILDING and RESIDENT. What is the relationship between BUILDING and RESIDENT?
A 1:1
A. 1:N
B. N:1
C. M:N
Answer: B
Q7. Consider the following SQL statement and the Orders relation shown in the exhibit: How many records should be returned?
A. Two records
B. Three records
C. Four records
D. Five records
Answer: C
Q8. Consider the entity-relationship (ER) diagram shown in the exhibit. Which type of relationship between the two entities is shown?
B. A many-to-many relationship
C. A one-to-one relationship
D. A one-to-many relationship
Answer: B