Interview Q&A / SQL & DBMS
SQL & DBMS interview questions
Joins, keys, normalisation, indexes and transactions for placement and backend interviews.
Prefer rapid revision? Practise SQL & DBMS short interview answers →
- What is the difference between a clustered and a non-clustered index?
A clustered index decides the physical order in which table rows are stored, so the table itself is the index and there can be only one. A non-clustered index is a separate structure holding the indexed values plus a pointer back to the row, and a table can have many.
AdvancedIn-depth4 min read