System Analysis and Design
In Data structure, main characteristic of "ring" is :

None of these
many records point to one record
All of these
first record points only to the last record
last, record points to the first record

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System Analysis and Design
Which of the following is not true of the conversion phase of the development life cycle?

the non machine components of the system should be considered
documentation should be emphasized
the user and systems personnel must work closely together
steps must be taken to phase out the old system

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