To display the details of the Segment call section,
you must select a Segment call in the -CE lines of a Segment. Segment
calls are not possible in a Table entity. For files and databases
that are represented by Segments, you indicate the sort key, occurs,
and redefinition options in this section. You also access the Segment
editor tabs.
Note: A Segment call is considered as an elementary Data
Element call.
- Occurs
- This field represents the OCCURS clause of an
elementary Data Element, a group, or a filler. The restrictions of
the COBOL OCCURS clause apply.
- Sort key
- This field identifies all the Data Elements that can be used as
control break sort keys, or as access keys to a file, a database or
a Pactables Table.
Note: It is advised to dedicate a Segment to only
one type of use. Each Data Element that can belong to a sort key must
be referenced by a unique alphabetic or numeric character. It is advised
to reference the indicators by a series (1, 2, 3 for example). The
actual sort sequence is selected at the Program level (on the -CD
Lines tab).
You must not forget that the format
of key group Data Elements must have been entered in the repository
or at the Segment level.Table 1. Possible values
of the sort key for PactablesValue |
Comments |
U |
References the access key for a Table. This
value must be indicated on the group Data Element if it is a group
key. |
S |
Indicates that the Data Element belongs
to at least one subsystem. |
Table 2. Possible values of the sort key
for DL/1 databasesValues |
Comments |
U |
References a unique key for a DL/1 database. |
M |
References a multiple key for a DL/1 database. |
1 - 9 |
Secondary index All other values designate a
search field. |
Table 3. Possible values of the sort key
for AS400 and relational databasesValues |
Comments |
0 - 9 |
AS400 physical file key. relational databases |
V |
Variable length column |
Blank |
Fixed-length column |
W |
For DB2® SQL,
SQL/DS and ORACLE, generation of a variable length column (VARCHAR). |
L |
For DB2 SQL,
SQL/DS and ORACLE, generation of a LONG VARCHAR. |
Note: Sort keys are not authorized on Data Elements redefining
other Data Elements.
- Redefines
- The Data Element that contains this option redefines the Data
Element of the same COBOL level that precedes it in the Segment description.
If a Data Element that redefines another Data Element is contained
in a group, it is considered to be an elementary Data Element. It
must be taken into account in the calculation of the number of Data
Elements that are contained in a group (except for DL/1 database Segments).
-G Lines
Click -G Lines to
optionally define -GC lines for the element that is called in the
current Segment.
You can switch to the tabs of the called element by clicking
the corresponding buttons in this section.