System Analysis and Design
HIPO

captures the essence of top down decomposition.
None of these
is a forms-driven technique in which standard forms are used to document the information
All of these
consists of a hierarchy chart and an associated set of input/process/ output charts

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System Analysis and Design
Advantages of Relational Database Management systems are

Security controls can be more easily implemented.
Flexibility, of relating different logical files
None of these
All of these
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

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

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