DBI202 Exam Practice Questions and Answers Updated 2024
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Course
2024/2025
Institution
2024/2025
DBI202 Exam Practice Questions and
Answers Updated 2024
Which of the following statement is belong to DML?
Select one:
a. CREATE
b. INSERT
c. GRANT
d. ALTER - Answer-b
Suppose a relation R(A,B) and S(B,C) are bags. R has 2 tuples (1,3), (2,4) and S has 3 tuples (1,2),
(1,2) and (4,5). The ...
c. Weak entity set can not have more than one supporting entity set
d. The key of weak entity set includes all key attributes from supporting entity sets - Answer✔✔-
d
What often is used to describe about data model?
Select one:
a. All of others
b. Structure of data
c. Constraints
d. Operations on data - Answer✔✔-a
Suppose relation R(A,B,C,D,E), and set of FD's S={ A -> D, BD -> E}. Which of the followings is a
key of R?
Select one:
a. AB
b. ABC
c. ABCD
d. A - Answer✔✔-b
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