cognos 8 id HOLAP because we can retriev data from cube and
rdbms.conos report net is rolap

cognos reportnet is both rolap and molap.cognos8bi is same

reportnet 1.1 is rolap,not holap because it can read data
from cube

cognos reportnet is r-olap,bcz we can't do  drill down $ 
dril up,
where as cognos8 is h-olap it can read the data from cube 
so we can do drill down & drill up.

ROLAP---------------- It is related to Cognos Reportnet.

MOLAP---------------- It is related to Cognos8.
HOLAP---------------- It is A combination of MOALP+ROLAP.

So that we will use in HOLAP in Cognos 8 BI Suite.

Note:
In Reportnet---------- we doesn't have Drillup and Drill 
Down.

In Cognos 8 BI Suite-------------- we can do Drillup and 
Drill down.

ROLAP---------------- It is related to Cognos Reportnet.

MOLAP---------------- It is related to Cognos8.
HOLAP---------------- It is A combination of MOALP+ROLAP.

So that we will use in HOLAP in Cognos 8 BI Suite.

Note:
In Reportnet---------- we doesn't have Drillup and Drill 
Down.

In Cognos 8 BI Suite-------------- we can do Drillup and 
Drill down.

cardinality is nothing but relation between tables like 1 
to 1, 1 to many and many to many.

cardnality is the nature of the relationship. 1-1,1-many 
relation ships

cardinality is the nature of the relation  between two 
query items

Cardinality is defined as howmany times a value of a p.k 
can be used as a f.k in the dependent table.

cardinality specifies the nature of relationships between 
the query subjects.
it is numeric notation .
the first type says about the type of join ie.,inner or 
outer join
and second one says about the number of records