Compression :
-->Every cube will have two fact tables /f & /e and have same structure.
when the char val same, dimension sid is same,c100 50 load after c100 60 load it creats request, except request id
if run query it will check sthe data base it brings two records in the olap and aggregate the two records in olap and it brings
only one aggr ratio is 2/1 is 2.
before run the query i compress the cube it deletes the request id information and maintain is zero
the data will goes to f to e table
then report come for both the tables.
-->Goto Cube-->manage-->collapse tab and select latest request id click release in the request tab there is green mark in compression
after compression we cant delete the request.
if u want "with zero elimination" when keyigure should be zero
-->if errors are there "request reverse posting". and is multiplied with(-1)for all keyfigures and give it.
delete data in cube in
3 Ways:
1.Selective deletion
2.Reqest by deletion
3.Delete data.
Goto-> Monitor and there is small icon with red symbol "request reverse posting" and select update rules click immedieately and yes refresh
i can do "request reverse posting" only when the data is in PSA.
If dont have data in psa complex by selective deletion by full load
in real time compression cube is 7 days before.and check box cal.request id and click.
Only compress those requests that are older than xxx
number of days until the request is processed 7.
Load cube(ods) to cube it supports delta based on request no.
If source cube is compression it doesnot enable the delta because there is no request number.
only compress when the loading is next level target.
Hope this info is useful.
Regards,
Prasad.