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 are insertion, update and deletion anomalies?
They are problems in a badly designed table where redundant data forces you to add dummy values, edit many rows for one change, or lose unrelated facts when deleting a row. Normalization removes them.
BeginnerQuick answer1 min read