Question
Which of the following can be used to avoid duplicate entries in a column?
More SQL Questions
- Which type of index physically reorders the data rows in the table itself based on the index key, meaning the data is stored in the order of the index?
- In PL/SQL, what type of parameter allows a procedure to both receive a value from the calling environment and return a modified value back to it?
- Which SQL keyword is used to remove duplicate records from a query result?
- Which of the following is true about a foreign key?
- Which of the following is a common use case for a PL/SQL trigger?
- Which SQL clause is used to filter results after a GROUP BY operation?
- What is an SQL `VIEW`?
- A transaction in DBMS is said to be atomic if:
- Which index type is most beneficial for queries that use range predicates (e.g., WHERE age BETWEEN 20 AND 30)?
- A materialized view differs from a normal view because it:
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