System Analysis and Design
A square symbols

identifies data flow
defines a source or destination of system data
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
None of these

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System Analysis and Design
A pseudocode is

a machine code
an easy way to communicate the logic of a program, in English¬like statements
a computer generated random number
a protocol used in data communication
None of these

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System Analysis and Design
The approach used in top-down analysis and design is

all of the listed here
to identify a top level function an d then create a hierarchy of lower-level modules and components.
to identify the top level functions by combining many smaller components into a single entity
to prepare flow charts after programming has been completed

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