System Analysis and Design
The systems conversion technique of totally removing the existing system and immediately implementing the new system is called as

parallel run
None of these
pilot conversion
phased conversion
crash conversion

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

to identify the top level functions by combining many smaller components into a single entity.
None of these
to identify a top level function and then create a hierarchy of lower level modules and components
All of these
to prepare flowcharts after programming has been completed

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System Analysis and Design
A square symbols

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

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