Question
Which of the following is used to uniquely identify a
record in a database table?Solution
"A Primary Key uniquely identifies each record in a database table. It ensures no two records have the same value in the specified field. A table can have only one primary key. Primary keys cannot contain NULL values. Used for indexing and referencing."
Scientific name of grape is:
Which one of the following clay mineral rich in potassium?
Micro water shed has an area of
Deficiency of which essential plant nutrient leads to ‘pop pod in groundnut’:
Consider the following statements regarding economic importance of fungi and choose the correct statements-
(A). Extract of the sclerotia of Clav...
What is a key feature of the “Command Area Development Programme”?
Match List-I with List-II and select the correct answer using the codes given below the lists.
Which one of the following is the resultant of a thin cloud of varying size found on the surface of the earth by condensation of atmospheric vapour?
How much premium will be provided for each 0.1% increase in recovery rate over and above 10.25%?
Which of the following is the main combustile constituent of biogas?
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