System Analysis and Design
In top down analyis and design

all of the listed here
each succeeding phase is as detailed as the phase before it.
each succeeding phase is less detailed than the phase before it
each succeeding phase is more detailed than the phase before it

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System Analysis and Design
Data manipulation language (DML)

describes how data are structured in the data base
all of the listed here
specifies for the DBMS what is required; the techniques used to process data
determine how data must be structured to produce the user's view

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

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

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