Introduction to Database System
Which of the following hardware components is the most important to the operation of a database management system?

high-resolution video display
high speed, large-capacity disk
printer
plotter

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Introduction to Database System
In a large DBMS

each user can "see" only a small part of the entire database
all of the listed here
each user can access every sub¬schema
each subschema contains every field in the logical schema

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