IBM 5110 User Manual page 152

Each field in the previous record contains information relating to a
specific driver. The length of the field is the maximum number of
characters that is to be placed in the field. The next illustration shows
a record containing the fields of information that might be found on a
time card:
Name Location
Date
Serial No. Shift Start Time
A group of records make up a file. Just as a filing cabinet contains a
number of records in some specific sequence, a 5110 data file also
contains records in some specific sequence.
The following illustration shows a record containing customer
information that would be used in making out an invoice:
Customer
Number
Name Street
Address
\
\
13 TOPPER AVE
City, State
The file would contain as many records as there are customer
numbers. A file should be given a unique name so that the file can be
distinguished from other files. Because the record in the previous
illustration contains customer master information, the file could be
named CUSTOMER.MASTER. A file containing master information
about the products in your inventory could be named ITEM.MASTER.
Different files can contain different record layouts. For example, the
following illustration shows a record that has items related to the item
file:
Item
Number Description
~
I
I
Sj4164
I
wtOGET
Price
/
J
13.95
Qty
in
Stock
004~
Input/Output Control 147