System Analysis and Design
A square symbols

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

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System Analysis and Design
Unit testing is

is checking the logic of one or more programs in the candidate system
running the system with line data by the actual user
None of these
making sure that the new programs do in fact process certain transactions according to Specifications
testing changes made in an existing or a new program

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System Analysis and Design
Most algorithms begin by _____.

Displaying the input items
Displaying the output items
Entering the input items into the computer
Processing the input items by doing some calculations on them
Entering the output items into the computer

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