System Analysis and Design
The systems conversion technique of totally removing the existing system and immediately implementing the new system is called as

crash conversion
parallel run
pilot conversion
phased conversion
None of these

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System Analysis and Design
Data manipulation language (DML)

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

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