You’re creating a new table consisting of three columns: Col1, Col2, and Col3. Col1 should be the primary key and can’t have any NULL values, and each entry should be unique. Col3 must not contain any NULL values either. How many total constraints do you have to create? ( refer to the tables in the JustLee Books database). a. 1 b. 2 c. 3 d. 4

Oracle 12c: SQL
3rd Edition
ISBN:9781305251038
Author:Joan Casteel
Publisher:Joan Casteel
Chapter4: Constraints
Section: Chapter Questions
Problem 18MC: You’re creating a new table consisting of three columns: Col1, Col2, and Col3. Col1 should be the...
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You’re creating a new table consisting of three columns: Col1, Col2, and Col3. Col1 should be the primary key and can’t have any NULL values, and each entry should be unique. Col3 must not contain any NULL values either. How many total constraints do you have to create? ( refer to the tables in the JustLee Books database).

a. 1

b. 2

c. 3

d. 4

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