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Introduction to SQL

Introduction to SQL
Which command undo all the updates performed by the SQL in the transaction?

TRUNCATE
ROLLBACK
DELETE
COMMIT

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Introduction to SQL
Which is the subset of SQL commands used to manipulate Oracle Database structures, including tables?

None
Both of above
Data Manipulation Language(DML)
Data Definition Language(DDL)

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Introduction to SQL
SQL provides five built-in functions: COUNT, SUM, AVG, MAX, MIN.

True
False

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Introduction to SQL
ON UPDATE CASCADE ensures which of the following?

Data Integrity
Materialized Views
All of these
Normalization

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Introduction to SQL
SELECT DISTINCT is used if a user wishes to see duplicate columns in a query.

True
False

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Introduction to SQL
The SQL statementSELECT ROUND(45.926, -1) FROM DUAL;

prints 50
prints garbage
is illegal
prints 045.926

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