User interface Subschema DDL
U929-J-Z125-9-76 187
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The item definition with PICTURE and USAGE clauses can be der ived from the following table 12, where n, m and l denote integers.If no entry is specified for USAGE and the mask string does not contain the s ymbol N, DISPLAY is assumed by default. If the mask string contains the symbol N, NATIONAL is assumed if the USAGE clause is missing.
Item type Item definition in schema Item definition in subschema
numeric,
unpacked PICTURE IS
mask-string
PICTURE IS mask-string
[USAGE IS DISPLAY]
mask-string identical with mask-string in
schema
alphanumeric,
fixed length
TYPE IS CHARACTER m PICTURE IS X(m) [USAGE IS DISPLAY]
national PICTURE IS N(m) PICTURE IS N(m)
[USAGE IS NATIONAL]
numeric,
packed
TYPE IS
FIXED REAL DECIMAL n,m
for n > m, m > 0
PICTURE IS S9(l)V9(m)
USAGE IS COMPUTATIONAL-3
l:= n - m
for n > 0, m < 0 PICTURE IS S9(n)P(-m)
USAGE IS COMPUTATIONAL-3
for n < m
PICTURE IS SP(l)9(n)
USAGE IS COMPUTATIONAL-3
l:= m - n
for n = mPICTURE IS SV9(n)
USAGE IS COMPUTATIONAL-3
for m = 0 PICTURE IS S9(n)
USAGE IS COMPUTATIONAL-3
binary
TYPE IS FIXED REAL
BINARY 15
PICTURE IS S9(l)
USAGE IS COMPUTATIONAL
l: = 1,2,3,4
BINARY 31
PICTURE IS S9(l)
USAGE IS COMPUTATIONAL
l: = 5,6,7,8,9
Table 12:Item definition with PICTURE and USAGE clauses