Introduction to Database System
Updating a database means

revising the file structure
all of the listed here
modifying or adding record occurrences
reorganizing the database

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Introduction to Database System
With respect to data input, the most accurate description of batch control is

controlling the input of each input clerk
dividing documents to be entered into batches
All of these
None of these
comparing to a pre-calculated figure the total of a data item summed across a batch records put into the system

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