Cognos singleton objects (v2012)
QUESTION:
How many items can be put into a singleton object in Cognos?
ANSWER:
Contrary to what the name ('single') suggests, a singleton object can contain multiple items from a query.
E.g. if you need to access several individual values from the same project record, they can all be within the same singleton. This is faster than querying the project query subject again and again.
So a singleton is not just a single value, but a container for one row of a query that can contain several items and even other Cognos objects (like tables) to format/arrange the data items.