System Analysis and Design
Advantages of Relational Database Management systems are

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

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System Analysis and Design
A square symbols

represents a process that transforms incoming data flow(s) into outgoing data flows
None of these
defines a source or destination of system data
is a data store-data at rest, or a temporary repository of data
identifies data flow

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

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