User interface Subschema DDL
U929-J-Z125-9-76 189
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Copying a vector and reducing it if required
level-number vector-name PICTURE IS mask-string
⎧DISP LAY ⎫
COMP UTATIONAL-3
[USAGE IS ⎨COMPUTATI ONAL ⎬]
NA TIONAL
DATABASE-KEY
⎩DATABASE-KEY-LO NG⎭
[OCCURS integer TIMES].
A vector is an item with a repetition factor. The repetition factor indicates how many dupli-
cates of the item are grouped into the vector.
Copying a vector into a subschema requires the same steps as copying an item (see
section “Copying a numeric item, an alphanumeric item o f fixed length or a national item”
on page 186 and section “Copying a database key item” on page 188).
integer specifies the repetition factor, which must be at least 1, but no greater than that
specified in the schema. A vector can thus be reduced to any number of items, even down
to one item, when copying it into the subschema.
The default value for integer is 1.