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Introduction to SQL

Introduction to SQL
The SQL keyword GROUP BY instructs the DBMS to group together those rows that have the same value in a column.

False
True

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

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

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Introduction to SQL
A subquery in an SQL SELECT statement:

cannot have its results sorted using ORDER BY.
can only be used with two tables.
can always be duplicated by a join.
has a distinct form that cannot be duplicated by a join.

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Introduction to SQL
Which of the following is the correct order of keywords for SQL SELECT statements?

SELECT, FROM, WHERE
SELECT,WHERE,FROM
WHERE, FROM,SELECT
FROM, WHERE, SELECT

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Introduction to SQL
SQL data definition commands make up a(n) ________ .

HTML
DML
DDL
XML

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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
Data types
Default values

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