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

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

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System Analysis and Design
Which of the following is not a characteristic of structured system development?

specification of the interfaces between modules
partitioning of systems into manageable levels of detail
None of these
the use of graphical tools, such as data-flow diagrams, to model system
All of these

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System Analysis and Design
Indexed-Sequential organization

means storing records in contiguous blocks according to a key
uses an index for each key type
has records placed randomly throughout the file
stores records sequentially but uses an index to locate records

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System Analysis and Design
A square symbols

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

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