A cube specification is the part of the query that determines which database is being queried. The cube specification fits into an MDX query as follows:
SELECT <axis> [, <axis>...]
FROM <database>
The <database> section follows the FROM keyword and should consist of delimited or nondelimited identifiers that specify first an application name and a then database name; for example, the following specifications are valid:
FROM Sample.Basic
FROM [Sample.Basic]
FROM [Sample].[Basic]
FROM'Sample'.'Basic'