Interview Q&A / SQL & DBMS
SQL & DBMS interview questions
Joins, keys, normalisation, indexes and transactions for placement and backend interviews.
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- What does a table need to be in First Normal Form, and what breaks it?
A table is in 1NF when every column holds a single atomic value, there are no repeating groups, and each row is unique. Storing a comma-separated list of values in one cell breaks 1NF.
BeginnerQuick answer1 min read