System Analysis and Design
An open rectangle

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

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System Analysis and Design
Acceptance testing is

running the system with line data by the actual user
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 systems

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

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

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