$4)$ In the star schema, the fact could be seen $($interpreted$)$ as

An entity from the real world

An association between all dimensions

An entity or an association

Nothing from above

$5)$ In the Multidimensional Model, any dimension $......................$

Could be linked directly to any other dimension

Could be linked directly to the temporal $($Date$/$Time$)$ dimension

Could not be linked directly to any other dimension

Could be empty of attributes