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Introduction to SQL

Introduction to SQL
There is an equivalent join expression that can be substituted for all subquery expressions.

True
False

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Introduction to SQL
In SQL, which of the following is not a data definition language commands?

UPDATE
GRANT
REVOKE
RENAME

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

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

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Introduction to SQL
A SELECT statement within another SELECT statement and enclosed in square brackets ([...]) is called a subquery.

False
True

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Introduction to SQL
Which of the SQL statements is correct?

SELECT Username, Password WHERE Username = 'user1'
SELECT Username, Password FROM Users
SELECT Username AND Password FROM Users
None of these

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Introduction to SQL
Let the statementSELECT column1 FROM myTable;return 10 rows. The statementSELECT ALL column1 FROM myTable;will return

more than 10 rows
exactly 10 rows
None of these
less than 10 rows

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