LEXICON Command Reference Manual
User Defined Attributes : Create New UDAs
Create New UDAs
The first step is to create a LEXICON database hierarchy, see User Defined Attributes. Commands used to create, delete and navigate around the LEXICON database elements are exactly the same as those used for any other database type: see the Administrator Command Reference Manual for details.
A typical LEXICON session could be as follows:
Example:
 
 
NEW UWRL /UWRL1
 
NEW UGRO /CENTRE_GRAVITY
 
DESC ’Centre of gravity attributes’
Create UDA World, UDA Group
NEW UDA /LENGTH UTYP REAL
Create and name UDA, type REAL
UDNA ’LENGTH’
Assign ‘user database’ attribute name, 
ABLEN 6
Minimum abbreviation LEN
UUNI DIST
Set UDA units as system DISTANCE units
DFLT 0.00
Set default UDA value
Here, the default value of the UDA has been set to zero, but in a case such as temperature it might be set to be a value of (say) 20.0 to represent an ambient temperature.
RPTX ’Length’
Set column heading to be used in reports
ELE ADD STRU SUBS
Define element types that are to use the UDA
COMPILE
Implement the UDA definition
The COMPILE command reports any definition errors and makes the UDA definition changes immediately available within LEXICON to other windows such as the Database Views Editor or the Schematic Model Manager Attribute Mapping dialogue. Without using the COMPILE command ('Validate' from the LEXICON Edit menu) the UDAs may not be visible in the windows or dialogues presented. Performing a savework will make the definitions available to other modules once a GetWork is performed by them.
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