A schema describes:
data elements
record and file
record and relationships
all of the above
An audit tail:
is used to make back up copies
is the recorded history of operations performed on a file
can be used to restore lost information
A data dictionary doesn't provide information about:
where data is located
the size of the disk storage device
who own or responsible for the data
how the data is used
A report form:
appears on the computer monitor during data entry
it used during report generation to format data
none of the above
A data dictionary is a is a file that contains __________.
DDL
Metadata
Directory
DML
Large collection of files are called:
fields
records
database
sectors
A computer file contains several records. What does each record contain?
bytes
words
programs
A good query system:
can accept English language commands
allows non programmers to access information stored in a database
can be accessed only by data processing professionals
both (a) and (b)
