Question :
A compound key -
Option 1: Is made up a several pieces of information
Option 2: Uniquely identifies an item in a list
Option 3: Both (1) and (2)
Option 4: Is a combination of each unique key
Correct Answer: Both (1) and (2)
Solution : The primary keys from two or more different tables are combined to form compound keys. Both of these keys uniquely identify data in their respective tables, but in the table utilising the compound key, both are required to do so.
Hence the correct answer is option 3.
The colour of the eye depends upon the pigment present in:
Option 1:
cornea
Option 2:
iris
Option 3:
rods
Option 4: cones
The concentration of which of the following decreases anaemia?
Haemoglobin
Collagen
Myoglobin
Option 4: Myosin
How many bones are there in the human body?
187
287
206
Option 4: 306
The colour of cow's milk is slightly yellow due to the presence of:
xanthophyll
Riboflavin
Ribulose
Option 4: Carotene
Question : A Ratio is simply one number expressed in terms of another. It is found by dividing one number into another.
R.N ANTHONY
N.R ANTHONY
Dr. AMAR
Option 4:
Nora Anthony
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