Environment variables enable you to use symbolic names for elements of the file system structure. Server names and path specification can be encoded using environment variables. The advantage of using variables instead of hard coded names is that it enables you to move databases and tables to another system or location.
An environment variable is represented by:
name
where:
|
name |
Case-insensitive symbolic name. |
The content of the variable can be any string. In addition, an environment variable can use (refer to) another environment variable.
Reserved Variables
The following variables are reserved:
|
MDS |
Replaced by the computer name of the MDS server. |
|
MD |
Replaced by the path to the current database MD directory. |
|
ROOT |
Replaced by an empty string to specify the D3 file system root. |
Variable Locations
Environment variables are stored in the Catalogue,Environment table in the dm database on the MDS server.
Variable Types
Variables are global to the domain and are either:
See Also