The files stored in a secondary storage device are composed of a hirarchy of data. What does a record in a file contain?
bits
characters
data field
schema
A database management system might consist of application programs and a software package called:
FORTRAN
AUTOFLOW
BPL
TOTAL
The key to a cost effective data input operation is:
OCR equipment
validity checks
validation
employee motivation
A computer file contains several records. What does each record contain?
bytes
words
fields
programs
Data items are composed of data elements:
true
false
none of these
all of these
The distingushable part of a record are called:
files
data
formats
