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Introduction to SQL

Introduction to SQL
COUNT(field_name) tallies only those rows that contain a value; it ignores all null values.

False
True

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Introduction to SQL
Indexes can usually be created for both primary and secondary keys.

True
False

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

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

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Introduction to SQL
Microsoft Access has become ubiquitous, and being able to program in Access is a critical skill.

False
True

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

SAVE
UPDATE
SAVE AS
MODIFY

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Introduction to SQL
The result of every SQL query is a table.

True
False

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