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SQL Set Operators

SQL Set Operators   Traditional Set Operators: Union Compatibility:     Requirement for the traditional set operators.    Strong requirement.                         - Same number of columns.                         - Each corresponding column is compatible.                         - Positional correspondence.     Apply to similar tables by removing columns first. SQL UNION Example:           Example 1: Retrieve basic data about all university people.                     SELECT FacNo AS PerNo, FacFirstName                                      ...
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Decimal to 8-Bit Binary Numbers


Decimal to 8-Bit Binary Numbers Conversion

Conversion:

Decimal Integer

8-bits representation

-120

1

0

0

0

1

0

0

0

50

0

0

1

1

0

0

1

0

-2

1

1

1

1

1

1

1

0

-9

1

1

1

1

0

1

1

1

100

0

1

1

0

0

1

0

0




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SQL Set Operators

SQL Set Operators   Traditional Set Operators: Union Compatibility:     Requirement for the traditional set operators.    Strong requirement.                         - Same number of columns.                         - Each corresponding column is compatible.                         - Positional correspondence.     Apply to similar tables by removing columns first. SQL UNION Example:           Example 1: Retrieve basic data about all university people.                     SELECT FacNo AS PerNo, FacFirstName                                      ...
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Correction For ERD

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