System Analysis and Design
Most algorithms follow the format of

Entering the input items, then processing the input items, and then displaying the output items
Entering the input items, then processing the output items, and then displaying the output items
Entering the output items, then displaying the output items, and then processing the output items
Entering the input items, then displaying the input items, and then processing the output items
Entering the output items, then processing the output items, and then displaying the output items

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System Analysis and Design
Advantages of Relational Database Management systems are

None of these
Security controls can be more easily implemented.
All of these
Data independence since it allows the database to grow by adding new attributes and relations.
Flexibility, of relating different logical files

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System Analysis and Design
The black-box concept:

None of these
assumes that inputs and outputs will remain stable
assumes that the black box is independent
All of these
is invoked by describing a system in terms of inputs and outputs, leaving the transformation process a black box.

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