System Analysis and Design
A hierarchical chart that divides a large program into modules, in which greater details is designed in successively lower programming levels, is called a

Scheme
Structure
sub-schema
None of these
All of these

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

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

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System Analysis and Design
A square symbols

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

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System Analysis and Design
Rapid prototyping proves the quality of a design by

having a program simulate the real system
both (a) and (b)
having a data flow diagram
having the system analyst present an overview of the design to users, programmers, and consultants
None of these

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System Analysis and Design
In a Decision tree

the branch, to be followed, depends on the conditions and decisions, to be made
the root is drawn on the left and is the starting point on the decision sequence
the nodes represent the conditions, with the right wise of tree listing the actions to be taken
all of the listed here

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