Confustion On ROLAP And MOLAP And HOLAP Modes
May 24, 2007
Hi, all experts here,
Thank you very much for your kind attention.
I am having a question on ROLAP and MOLAP storage modes. In ROLAP mode, we store all data in source relational databases and though then we can gain near real-time data for the queries. But with MOLAP and Proactive caching, we can solve this problem by setting update notifications to the MOLAP cubes. Also, with HOLAP, we can combine ROLAP and MOLAP (store leaf data in source relational database, while aggregations in MOLAP format), thus we can actually get the near real-time data for the queries as well once there is any changes to the underlying source relational database.
I am just a bit confused about the distinct benefts we can differenciate between these aspects regarding MOLAP with proactive caching and HOLAP. (not convinced about the reason to use ROLAP storage mode).
I hope my question is clear for your help and thanks a lot in advance for your advices and help for that and I am looking forward to hearing from you shortly.
With best regards,
Yours sincerely,
View 8 Replies
ADVERTISEMENT
Aug 11, 2015
creating MOLAP, ROLAP and HOLAP cubes... I'm looking for detailed steps involved.I'm using MS-SQL Server 2014.
View 2 Replies
View Related
Nov 12, 2015
My Power view reports do not show the grand totals correctly. I think my issue relates perfectly to [URL]. However we have updated service pack 2 on both the sql data warehouse and the ssas box. They are 2012. However the power view is still incorrect. Pivot tables seem to work just fine. In AS I have a 2 separate measure groups that has a total count. I then use mdx to bring those two together. Something I have done many times in past with as 2008. My mdx looks like this below. I then hide Total Count EC (from measure group 1) and Total Count SF (from measure group 2). This way I have 1 total count value and they can use another dimension to see the two separate if needed.
CREATE
MEMBERCURRENTCUBE.MEASURES.[Total
Count New] AS
//
([Measures].[Total Count] + [Measures].[Total Count SF]),
DISPLAY_FOLDER
=
'Totals',
ASSOCIATED_MEASURE_GROUP=
'Report',
FORMAT_STRING
=
"#,#0",
VISIBLE=
1;
The measure Total Count EC works just fine but the Total Count (MDX) does not . All in Power Pivot works fine but in Power View the grand totals are not correct.
View 3 Replies
View Related
Aug 23, 2006
Hi all,
I am inquiring whether I can have some business Intelligence on Relational DBMS in SQL 2005 as projecting the number of patients within a health care basing on the available data.
Please help me out.
Regards,
Ronnie
View 7 Replies
View Related
Jul 12, 2000
Hi ,
I have two servers, One is with per seat mode
another with per license mode.
when i am registering one server which is having per seat mode at one of
my client machine , it is giving u dont have license permission.
Can anyone suggest me regarding license modes if u have two servers.
thanku
rk
View 2 Replies
View Related
Sep 13, 2006
I am trying to create a ROLAP cube with 'Enable real-time updates' .
When I go to process the cube it fails stating, Creating indexes for Aggregation XXXX
CANNOT enable real time updates on this partition without indexed views: <date>
Im running SQL Sever 2000 Developer Edition - SP4 on Windows Server 2003
My cube don't use DCount measures ,only simple calculation
(sum, count)
Can anyone help me debug this? Is there any way to get a more descriptive
error from Analysis Services?
Thank you
View 3 Replies
View Related
Jan 6, 2015
I have a table where each unique entry can have up to 12 'modes', each mode with a start and stop date. A mode is a certain type of characteristic attributed to an entry.
There are 60 different modes and a given mode number can appear in any of the 12 mode fields. I created a very simplistic example table below.
Criteria:
I need to find all entries that have any of the modes = 1
AND for any of the other mode fields = 2 or 3, all modes = 2 or 3 must have a mode_enddate that is NOT NULL.
example:
select * from #temp_work
where (mode1 = 1 or mode2 =1 or mode3 = 1 ...)
And if any of the other mode1-12 fields = 2 or 3 then all mode 2 or 3 mode_enddate must be NOT NULL. I have tried a few different ways to try and get this data, but none of them have been very good.
Create temporary table
create table #temp_work (
id int NULL,
mode1 varchar(20) NULL,
mode_startdate_1 date NULL,
mode_enddate_1 date NULL,
[Code ....
From this limited example, the only valid entry should be ID 1 as the mode = 3 has a NOT NULL mode_enddate.
ID's 2 and 3 both have mode_enddate_X that are NULL, so should not be included.
View 4 Replies
View Related
Mar 20, 2008
I have a question, I keep getting the warning where the lookup found duplicate reference key values when caching reference data. It also says to switch over to partial or no cache mode. I switched to partial and and it took way longer to run my package. I have around 200,000 records right now but this table will continue to grow. I guess my question is which mode should I be using? I have another table that will have millions of records in it.
thanks,
View 6 Replies
View Related
Mar 20, 2007
I need to display the recovery mode of ALL databases on a server into a table. (Just like the sp_helpdb prcedure extended with the recoverymodel of each Database).
Can anyone give me a hint on this or provide me with a little tsql code snipplet to realize this?
Thanks alot in advance
View 4 Replies
View Related
May 24, 2007
Hi, all experts here,
Thank you very much for your kind attention.
I am having a question on the SSAS2005 OLAP Cubes storage modes. We know SSAS2005 supports 3 different storage modes: ROLAP, MOLAP, HOLAP.
Do all these three storage modes of cubes store data in another physica analysis services databases which are inrelative from their data warehouse (in case they are built on top of the data warehouse)? (so it does not matter at all even we remove the data warehouse?)
Thank you very much in advance for your help and I am looking forward to hearing from you shortly.
With best regards,
Yours sincerely,
View 7 Replies
View Related
Jul 12, 2006
Hi everyone,
I wonder that SQL Server 2000 support the following lokc modes by default or not.
Shared (S)
Update (U)
Exclusive (X)
View 3 Replies
View Related
Nov 28, 2014
Query that show me a Products Tables and its models, 1 product could have 2 or more models
Example Table Products
id Name
1 Product 1
2 Product 2
3 Product 3
Example Table Models
idmodel idproduct model
1 1 Model 1
2 1 Model 2
3 1 Model 3
4 2 Model 1
5 2 Model 2
6 3 Model 1
And I want to show:
Product Model
Product 1 Model 1
Model 2
Model 3
Product 2 Model 1
Model 2
Product 3 Model 1
How can I query to show that?
View 5 Replies
View Related
Nov 10, 2015
Is there any way to change the AES mode in SQL server, to obtain the same ciphertext each time for the same plaintext?
View 3 Replies
View Related
Jul 7, 2015
I Create a measure group and two dimensions using [AdventureWorksDW2012], I try to change one dimension's storage mode with setting property proactive caching as Real-Time ROlap. There is no any warning message when deploying and processing, but error occurs when I query in sql server analysis services, see below for the error messages and the screen capture.
Error occurred retrieving child nodes: the current operation was cancelled because another operation in the transaction failed.
View 2 Replies
View Related
Aug 20, 2011
I have SSAS 2008 Enterprise sp2 (not R2) running on a production server. One of the dimensions is defined as real-time Rolap - set to clear the cache whenever the table changes.
I placed triggers on that table to be sure, so I know no changes occur on that table sometimes for 10 or 15 minutes at a time - and yet I get 100's of change notifications (I noticed them on a profiler session). It seems as though the notifications come as often as the dimension gets queried.
I think this is causing one of my longer running queries to fail because of locking issues. I assume this is because the queries are getting killed when they're in middle of using an outdated cache.
The strange thing is that I cannot reproduce this on the dev servers. The main difference between the dev and production servers is that the production servers are behinfd a cluster. I don't know if that could make any difference.
I really need to know why I'm getting so many notifications.
View 2 Replies
View Related
