HP 3000 Manuals HP 3000 Manuals
CREATE ATTRIBUTE
Creates a new attribute.
Syntax
C[REATE] A[TTRIBUTE] attribute-name
[;INT[ERNAL] = internal-name]
;T[YPE] = attribute-data-type
[;LEN[GTH] = attribute-length]
[;E[DIT-]V[ALUE] = attr-edit-value1
[,attr-edit-value2]
.
.
.
[,attr-edit-valueN]]
.
Parameters
attribute-name External name of the attribute to be created.
internal-name Internal name of the attribute to be created. If
not specified, the internal name is the same as the
attribute-name.
attribute-data-type The attribute data type. Valid data types are:
alias
boolean
character
floating
integer
variable
attribute-length Length of the attribute. Legal values are:
Data Type Length
alias 32
boolean 1
character 1 - 255
floating 4 or 8
integer 2 or 4
variable 0 (undefined)
If the attribute-data-type is a character,
floating, or integer, the length is required.
Otherwise, this clause is optional and the length
is set at the only possible value.
attr-edit-value(N) The edit values for the attribute. The first value
you specify is the default value used whenever you
specify an occurrence using this attribute and do
not provide a value. If there is only one value,
it is only a default and no edit check is
performed. However, if there is more than one
value, the values you specify during CREATE ENTITY,
CREATE RELATIONSHIP, MODIFY ENTITY, and MODIFY
RELATIONSHIP commands must match one of the values
specified here. If the value you specify through
one of these commands is not one of the edit
values, an error is returned. Edit values are not
allowed for data types alias and variable.
The edit values are a list of values separated by
commas. If the type is boolean, only the values
true and false are allowed. If the type is
character, any character string less than or equal
to the length is allowed. (If you use any
character not allowed in a user-defined name, you
must enclose the value in quotes.) Finally, if the
type is either floating or integer, any single
number or a number range of the form "number :
number" is allowed as an entry in the list. If you
specify a range as the first entry in the list, the
first number of the range is the default.
Description
To avoid possible name conflicts with any future extensions to the core
set, do not create any attributes with a name starting with the
characters "HP" .
Open Mode: Customization
Scope: DA scope or any scope with extend capability. The scope
with which the dictionary is open is the owner of the
attribute.
Example
The following example creates the attribute terminal-type of data type
character, with a length of 30. Only the values TTY and GRAPHICS are
allowed as values for the attribute with TTY as the default.
>CREATE ATTRIBUTE terminal-type;
>>TYPE = character;
>>LENGTH = 30;
>>EDIT-VALUE = TTY, GRAPHICS.
>