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Introduction to SQL

Introduction to SQL
Which of the following is valid SQL for an Index?

CHANGE INDEX ID;
CREATE INDEX ID;
REMOVE INDEX ID;
ADD INDEX ID;

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Introduction to SQL
Which of the following do you need to consider when you make a table in SQL?

Primary keys
All of these
Default values
Data types

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Introduction to SQL
The wildcard asterisk (*) is the SQL-92 standard for indicating "any sequence of characters."

True
False

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Introduction to SQL
The command to remove rows from a table 'CUSTOMER' is:

UPDATE FROM CUSTOMER ...
DELETE FROM CUSTOMER WHERE ...
DROP FROM CUSTOMER ...
REMOVE FROM CUSTOMER ...

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Introduction to SQL
SQL is a programming language.

False
True

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

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

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