HP DDL D40 Reference Manual page 73

Definitions and Records
JUSTIFIED clause
tells the DDL compiler to output the JUSTIFIED RIGHT clause in COBOL source
files.
LN clause
specifies the language, territory, and character set for a text item.
MUST BE clause
specifies the set of valid values that can be entered into a field. Requesters
generated by the Pathmaker product enforce the MUST BE constraints; user-
written programs must be coded to enforce them.
NULL clause
assigns a null value to a field or group used as an alternate key in an Enscribe
structured file.
OCCURS clause
declares a subscripted array of like fields or like groups.
OCCURS DEPENDING ON clause
declares a variable-length array, only for COBOL or DDL source code.
REDEFINES clause
assigns two different data structures with different names to the same storage
space.
SPI-NULL clause
assigns a null value to a field or group used in an SPI extensible structured token.
[NOT] SQLNULLABLE clause
specifies whether a group or field is to be treated as an SQL nullable item. If
SQLNULLABLE is specified at the group level, all subordinate line items within the
group are SQL nullable unless they are individually specified otherwise. If NOT
SQLNULLABLE is specified at the group level, all subordinate items are not SQL
nullable unless explicitly specified as SQLNULLABLE; this condition is also true if
no specification of SQL nullability is made at the group level.
TACL clause
associates a TACL data type with a DDL data type defined in a field or group
DEFINITION statement or a RECORD statement.
Data Definition Language (DDL) Reference Manual—426798-002
5 -7
Syntax Elements