System Analysis and Design
A square symbols

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

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System Analysis and Design
Positive testing is

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
is checking the logic of one or more programs in the candidate system
running the system with line data by the actual user

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System Analysis and Design
A system analyst designs a new system by

None of these
developing the system as a large, single unit
propose alternatives to the current system
identifying sub systems and the interfaces between sub systems
adopting a developed system to the present environment

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