Introduction to SQL
A view is which of the following?

A virtual table that cannot be accessed via SQL commands
A base table that can be accessed via SQL commands
A base table that cannot be accessed via SQL commands
A virtual table that can be accessed via SQL commands

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Introduction to SQL
NULL is

the same as blank for character
the same as 0 for integer and blank for character
not a value
the same as 0 for integer

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