System Analysis and Design
The time lag, between the keying of the last character on the keyboard input and the appearance of the first output character on the screen, is known as

System review
None of these
Key
batch Processing
response time

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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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