Facility is a term used that refers to a set of data pertaining to a unique database residing within the WIMS database server.
A facility has a Facility Name and a Unique Identifier. Example, the Tutorial - Rocky Creek WWTP database has a Unique Identifier of OPSWWTUTOR as shown in Facility Setup:
In MS SQL Server the Unique Identifier is the database name:
In Oracle, the Unique Identifier is the Schema Owner of the database objects for a facility.