Structured Query Language MCQ interview TRUE/FALSE questions

Structured Query Language MCQ interview TRUE/FALSE questions 

Structured Query Language MCQ interview questions - TRUE / FALSE questions

1. We cannot use HAVING clause without GROUP BY clause in SQL.

TRUE
FALSE

2. There are often multiple ways of writing an SQL query in relational algebra.

TRUE
FALSE

3. One weakness of triggers is that they can only be activated after an update/insert/delete, not before.

TRUE
FALSE

4. Relational algebra was invented to formalize the underlying operations of the SQL language.

TRUE
FALSE

5. As a query language, SQL is more declarative than relational algebra.

TRUE
FALSE

6. An attribute declared as UNIQUE can have NULL as its value.

TRUE
FALSE

7. MODIFY TABLE is one of the data defnition language commands in SQL.

TRUE
FALSE

8. SQL domains (created using CREATE DOMAIN) are user-defined data types.

TRUE
FALSE

9. The information about "Who is authorized to access the table" cannot be included in the CREATE TABLE command in SQL.

TRUE
FALSE

10. It is not possible to use WHERE clause and then use GROUP BY clause in the same query.

TRUE
FALSE

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