Computer science · University
Transactions and safe querying · revision notes
A group of database operations treated as one logical unit.
Key ideas and conditions
Transaction
A group of database operations treated as one logical unit.
Parameterized query
A query that keeps data values separate from SQL syntax.
Constraint
A database rule that rejects invalid states or values.
Least privilege
Granting only the permissions required for a task.
Explain without looking
- Give a short example showing how Constraint would be used in practice.
- Summarize why Least privilege matters in the lesson “Transactions and safe querying”.
Further reading and review references
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