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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:


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:


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:


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:


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:


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: