System Analysis and Design
Benchmarking is used

None of these
for application proto-typing
for system acceptance
to select computer systems
to maintain files in up-to-data condition

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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
Data independence since it allows the database to grow by adding new attributes and relations.
None of these
All of these

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System Analysis and Design
The advantage of Purchase Option is (are)

Insurances, maintenance, and other expenses are included in the rental charge
None of these
the flexibility of modifying the system at will
No financing is requird. The risk of system obsolescence is shifted to the lessor
All of these

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System Analysis and Design
An open rectangle

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
identifies data flow
None of these

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