Classes and Categories of Data

Start of change
Table 1. Class, category, and usage of data items
Class of elementary data items2 Category Usage
Alphabetic Alphabetic DISPLAY
Alphanumeric

Numeric Edited
Alphanumeric Edited
Alphanumeric

DISPLAY
Numeric Numeric

DISPLAY (type zoned decimal)
NATIONAL (type national decimal)
PACKED-DECIMAL (type internal
decimal)
COMP-3 (type internal decimal)
BINARY
COMP
COMP-4
COMP-5

Internal Floating-Point1

COMP-1
COMP-2

External Floating-Point1 DISPLAY
Boolean1 Boolean1 DISPLAY
DBCS1

DBCS1
DBCS-edited1

DISPLAY-1
National1 National1 NATIONAL
Date-Time1

Date1
Time1

DISPLAY
PACKED-DECIMAL

Timestamp1 DISPLAY
  1. IBM Extension
  2. The class of group items is alphanumeric for all categories.
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