introduction-to-sql database question and answers -Page 7

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Introduction to SQL problems

1. COUNT(field_name) tallies only those rows that contain a value; it ignores all null values.
Options
A. True
B. False

Correct Answer: True

2. SQL provides five built-in functions: COUNT, SUM, AVG, MAX, MIN.
Options
A. True
B. False

Correct Answer: True

3. The keyword LIKE can be used in a WHERE clause to refer to a range of values.
Options
A. True
B. False

Correct Answer: False

4. A dynamic view is one whose contents materialize when referenced.
Options
A. True
B. False

Correct Answer: True

5. The format SELECT-FROM-WHERE is the fundamental framework of SQL SELECT statements.
Options
A. True
B. False

Correct Answer: True

6. A SELECT statement within another SELECT statement and enclosed in square brackets ([...]) is called a subquery.
Options
A. True
B. False

Correct Answer: False

7. Indexes may be created or dropped at any time.
Options
A. True
B. False

Correct Answer: True

8. SQL is a programming language.
Options
A. True
B. False

Correct Answer: False

9. The SELECT command, with its various clauses, allows users to query the data contained in the tables and ask many different questions or ad hoc queries.
Options
A. True
B. False

Correct Answer: True

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