Introduction to Database System
In a large DBMS

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

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Introduction to Database System
When performing a look-up operation using a form

None of these
you look at each form sequentially until you see the one you want
All of these
you type the key in an entry line, and the correct form is displayed
you enter the search value into the form

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Introduction to Database System
In SQL, the CREATE TABLESPACE is used

to add/rename data files, to change storage
All of these
to create a database trigger
to create a place in the database for storage of scheme objects, rollback segments, and naming the data files to comprise the tablespace
None of these

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