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Introduction to SQL

Introduction to SQL
Which SQL statement is used to update data in a database?

UPDATE
SAVE AS
MODIFY
SAVE

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Introduction to SQL
A subquery in an SQL SELECT statement is enclosed in:

CAPITAL LETTERS.
brackets -- [...].
braces -- {...}.
parenthesis -- (...) .

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Introduction to SQL
Data manipulation language (DML) commands are used to define a database, including creating, altering, and dropping tables and establishing constraints.

True
False

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Introduction to SQL
Table employee has 10 records. It has a non-NULL SALARY column which is also UNIQUE.The SQL statementSELECT COUNT(*) FROM employee WHERE SALARY > ALL (SELECT SALARY FROM EMPLOYEE);prints

0
9
10
5

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Introduction to SQL
Which of the following join is also called as an 'inner-join'?

Non-Equijoin
Self-Join
Equijoin
None of these

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Introduction to SQL
The SQL WHERE clause:

Both A and B are correct.
limits the column data that are returned.
Neither A nor B are correct.
limits the row data are returned.

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