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 is SQL injection and how do you prevent it?
SQL injection is when user input is concatenated into a query and changes its meaning. Prevent it with parameterized queries or prepared statements, input validation and least-privilege database accounts.
BeginnerQuick answer1 min read