CBSE 2026 · Central · Set 4 · Q12 · 1 mark
A table has two candidate keys, one of which is chosen as the primary key. How many alternate keys does this table have?
Official answer
From CBSE’s own marking scheme for this paper.
(B)
$\displaystyle 1$
Marking-scheme solution
(B) $\displaystyle 1$
Relational Data ModelAlternate KeyApplymcq
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CBSE Class 12 Computer Science past-paper question from the 2026board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.