InfoCube design- partition of chararcters over IC - compression rate etc

Hello,
prerequiste for aggregation in an IC is that technical key is identical. technical key is formed of all DIM IDs and
those in turn are formed by characters in appropriate dimension. That means all characters of all dimensions form up the
technical key. So I have to organize an appropriate set of characters in an IC to get max. compression rate. That
partitioingn may result in to many InfoCubes if I consider semantic or project aspects. On the other hand aggregates are also
a means for realizing compression. Could you support me with guidelines for that or support me with links for this
subject.
Thanks in advance
Oskar

Arun,
thanks for your answer but I think I must change my misleading question to get the answer I want to have
Assumption :
1) InfoCube A has dimension d1 with characters ch1 and ch2 and dimension d2 has character ch3 and
ch4.
2) If ch1 and ch2 and ch3 and ch4 are identical standard aggregation is done ex. sum
Lets say thats what I want to have as aggregation level and which I get If I compress table F to table E
Til now I used an IC with 4 chararcters in 2 dimensions. Now I assume that I have additional 20 characters which
I didn´t organize in Cubes but they are semantical belonging to characters used in InfoCube A. If I pack them in Cube A
may be I destroy that aggregatio level I want to have ( because now all 24 characters must be identical for case of
aggregation ) . But if I organize them in seperate ICs may be I get to much ICs.
How would you solve that modelling ? Would you for example pack all characters into one IC and solve necessary aggregation level with aggregates , because they allow to use a subset of characters in the underlaying cube ?
Thanks in advance
Regards,
Oskar

Similar Messages

InfoCube Design and Partitioning

Hi All, when we design an InfoCube, like when we decide which craracteristics to go in which dimension, does partitioning decided at this time as well? If os, please provide some details?
Can somebody guide me on this? thanks in advance.

Hi,
Both Infocube design and Partitioning will help in improving the performance.
Partioning will be decided based on the data to be stored in the Infocube. If for example, lets assume that the cube will hold 15 yrs of data. As you know, partiontioning can be done only based on Fiscal Year or Calmonth
If partioning is done on Fiscal Year, we might decide to go for 15 partitions as we have 15 yrs of data. If we decide to go for 7 partitions, then 2 yrs of data will be stored in each partition. Like wise for Calmonths, we might go for 15*12 partitions.
If your system is 3.5, data should not be there to do partioning, if your system is BI7, partioning can be done even if data is present in the cube.
Regards,
Sekhar

InfoCube design - high granularity by inclusion of document level detail

When considering the inclusion of sales document level detail in an infocube (0DOC_NUMBER/0S_ORD_ITEM), two possible high-level designs come to mind:
1. Make sales document number/sales order item master data carrying infoobjects and include in infocube as line item dimensions. Activate all necessary characteristic navigational attributes for reporting.
2. Model infocube dimensions to contain all necessary charactistics for reporting with inclusion of characteristics sales document number/sales order item therefore, fact table will have highest level of granularity.
Knowing the 'textbook' does not suggest the above designs, has anyone attempted maximum granularity in infocube design with success or otherwise? If successful, has this design outperformed DSO or InfoSet reporting performance?
Thank you - Brendan.

Hi Brendan,
we have implemented both solutions; it all depends on the number of documents. if it is much more than 1 mio; I recommend storing your data in the target; if it is 1 or 2 mio you can have master data (more flexible).
We have some 4 mio records in 0MAT_PLANT and are starting having performance issues.
by the way; if you are using ORACLE, NEVER mark a dimension with high cardinality; that doesn't work.
hope that helps
Olivier.
Message was edited by:
Olivier Cora

Infocube Design/Development

Hi,
What are the factors we consider for designing Info cube and also what are factors we should consider in the requirments gathering for infocube design
and
How to choose an infoobject to declare it as line item dimension
Thanks

Hi BW Developer,
As for requirements gathering you may want to go through the blog: http://www.sdn.sap.com/irj/scn/weblogs?blog=/pub/wlg/15737. [original link is broken] [original link is broken] [original link is broken]
When desinging an InfoCube, U need to consider factors such as:
- What purpose the report will be used for reporting?
- What are the characteristics & KeyFigures required in the user report as per requirements
- What is the amount of data that will be used for reporting?
- What is the frequency for user reporting?
- How many users are expected to use the report at a given time?
- How do u seperate (design) dimensions using 1:n relationships.
- Perfomance measures such as Aggregates, Line Item dimensions, etc.
These are some of the pointers that can be considered.
Hope the above helps.
Regards,
Kunal G

Compression rate advice

I need to export a compressed file from FCP, that runs at just over 1hr, to iDVD via iMOVIE. (I haven't got my head around DVD Studio Pro yet!) What is the advised compression rate for this transfer? I usually use DVD PAL but it's too big and requires a dual-layer disc. I'm sure there is a different, more popular, choice of compression that I can use. The files will need to be able to stand alone and be importable into iMOVIE so that I can create a an iDVD project. Any ideas?

Make a QT Movie, not self contained, then drag the
file into iDVD. You dont need to use iMovie unless
there is something in there you want that FCP doesn't
offer... (Can't think of what that might be though.)
Thansk for replying. Before I do that - will a QT movie recognise chapter markers? I want to break it down in a scene selection menu.

Compression Rate = Quality... Rule of Thmb?

Are there any rules of thumb for compression rates and resulting quality? For instance, I've heard 5Mbps is the bottom end for "as good as commercial movie DVDs". I guess measures that describe "quality" are subjective or varied... but terms that are significant to me are things like "Movie DVD's" "Betacam" "VHS" "no perceptable loss, even in motion scenes".
I often need to decide if a client will need one or two disks, based on the proposed amount of footage, before production. I make a rough bit-budget ahead of time. So, if the bit-budget calls for a 4.2 bit rate and that is too ugly for what I think my client needs, then I'll need to go to 2 disks. So, knowing in advance the bit rate -to- quality relationship would be very helpful.
Let's say the constants are:
Decent DV footage, let's say "average" screen action
Edited on FCP
Compressed with Compressor-2, Constant Bit Rate, to Mpeg-2
Thanks, Ralph
Desktop G4 / 1.5 G / Mac OS X (10.3.6)
Desktop G4 / 1.5 G / Mac OS X (10.3.6)

Not really. A lot comes down to what you see on screen when you try a few test encodes. Higher data rates don't always equate to higher quality - particularly at the upper end of the scale... can you see a difference between 8MBPS and 9.4MBPS, for example?
The fact is that it is only through experience that you get to know what tends to look good for the material you have got... therefore encode lots of things and see how it turns out!
Quite often the client will demand a single disc set, for example. Your experience will tell you that their 4 hour sport video won't look very good and so you have to have that conversation with them. No matter how good the source footage is, when you reduce the bitrate too far to get a file that fits the disc they want the quality will suffer - but you can turn to MPEG1, half D1, etc to help get them to replication, of course.
In general, the middle of the bit rate scale will be a good enough place to start. If you have really clean source footage then a software encoder like Compressor might do the job alright, but a better encoder, such as BitVice, MegaPEG.X, Canopus Procoder will do a better job with the same bit rates. A hardware encoder like the sonic SD2000 might give a different result again, whilst Cinemacraft could be set up to run a multi-pass VBR encode over a period of several days and squeeze every last drop of quality out of the footage.
There are simply too many variables involved, and I'd be sceptical of a 'one size fits all' approach, I'm afraid.
5MBPS for 'as good as commercial DVDs' is nonsense in this context. 5MBPS on really clean betacam source footage run through an SD2000 is a dream compared to 5MBPS on noisy, poorly lit mini-DV put through Compressor... it's unwise to make generalisations, IMO.

Is it possible to process audio tracks with compression, eq, etc....in Logic Express, similar to the way you can do it in Protools? If so, how do you do it?

Is it possible to process audio tracks with compression, eq, etc....in Logic Express, similar to the way you can do it in Protools? If so, how do you do it?

Hello,
Yes, add such effects using the insert slots on the track strip.
Click on the slot, choose your plugin from the list. Double click to bring up its control window to set parameters.
Alastair.

File compression in Mavericks: can you control the compression rate?

Hi all,
Is there anyway a user can control the commpression rate in Mavericks. I previously used Stuffit Expander and the built in compression in Entourage 2008. As Mavericks has its own compression utility I cannot find where you can control the rate etc.
I have removed Stuffit Expander 2010.
Regards
Bob

Not via the GUI. However, the Terminal command compress does have a compression ratio setting. Launch the Terminal app in /Utilities and type this into the window that pops up:
man compress

BR0083W Compression rates out of date - run BRBACKUP with option '-k only'

Hi,
I am getting backup warning in offline backup. i am attaching error log.
BR0280I BRBACKUP time stamp: 2009-09-21 14.41.55
BR0319I Control file copy created: /oracle/KBP/sapbackup/cntrlKBP.dbf 9388032
BR0083W Compression rates out of date - run BRBACKUP with option '-k only'
OS = IBM AIX
DB = oracle 10g
kindly do the needful
kvl

Dear KulandaivelS,
Try this command.
"brbackup -k only"
Also check this [Link|http://help.sap.com/saphelp_45b/helpdata/EN/0d/d30b734a0c11d182b80000e829fbfe/content.htm]
Regards,
Bhavik G. Shroff
Edited by: Bhavik G. Shroff on Sep 21, 2009 2:39 PM
Edited by: Bhavik G. Shroff on Sep 21, 2009 2:44 PM

Compression Rate, does Photoshop count it out for me while saving for web?

Just as the title says. Is it possible to see the compression rate of your image?
Thanks!

If you are think something similar to how zip or 7 shows the compression while it is working, no it does not.

Which infocube contains inforamtion of date, currencies, and exchange rates

Hi Experts,
Cud u pls tell me which infocube contains inforamtion of date, currencies, and exchange rates?
Any useful answer will be rewarded with suitable points.
Thanks!
Rohan

Hi Rohan,
It is stored in table TCURR . Ref. of which can be taken for creating cubes / ods .If requirement is for currency translation then i would say go for Tcode RRC1.
There is one more program also which can be executed for currency translation ( Tcode SE38 : Program : RCURTEST )
Hope that helps.
Regards
Mr Kapadia
Message was edited by:
Mr Kapadia

Possible to CONVERT CLIPS in order to match COMPRESSION rates?

I'm working with a sequence that has mismatched compression rates for my source material....
75% of my material is 8-bit uncompressed, that's also my sequence setting....however, I've had to import other material that's not 8-bit and, of course, requires rendering in the sequence...
Any way to convert this new material to 8-bit (or any other compression) that will allow me to use it in my sequence without rendering?
I think I know the answer, hoping that maybe someone out there has found a work-around.
Thanks in advance,
Mark

Thanks, StudioX....
I was able to convert it to 8-bit using my Compressor.....I don't have QT pro....
Dang thing's taking so long to convert (it's a 90:00 film), that it's almost worth just rendering the clips I'll end up using rather than doing the entire film....
It doesn't usually occur to me that I have to go outside the fcp application to tweek files....
Thanks again....
Mark

Lower Compression Rates & Dropped Frames

Frames keep on droppin' and FCE keeps telling me to lower the compression rate (among other things I've already taken care of, so I'm guessing this is the problem). But 1) I have no idea where to do this and 2) I have no idea what to change the rate to.
Halp?

How do I do what? Copy the material onto another drive? You need another drive. Select all the material on the drive. Drag it to the other drive. To erase and reformat the drive you use Disk Utility. It's on your system hard drive. The first panel will have a tab for erasing.

Audio compression rate

Hi,
is there a way to change the audio compression rate on my Ipod? Bass and treble sound very distorted when connected to my home stereo amplifier.
Many thanks
acer aspire 3500 Windows XP

Distortion can be caused by several things -
1) Simply overloading the input to your hi-fi or by a high data compression rate or a combination of the two. Check the input sensitivity rating of the socket you are using for the iPod on your hi-fi is around the 1 volt level (RMS). If is much less than 1V (say 300mV or less), even a lowish volume setting on the iPod could cause distortion, at least in the bass. Input overload from high bass levels can cause clipping distortion that can blow speaker tweeters (not the woofers) and sound terrible. Also, file compression at less than 128kbps causes progressively more disagreeable distortion right across the audio bandwidth.
2) Downloaded files are sometimes highly compressed (less than 68kbps) and are not worth playing from any half-decent hi-fi. Also, avoid ripping CD's at less than 128kbps if you want to play back through your hi-fi. Preferably, use a bigger bit rate than 128kbps. iTunes material should be fine, at least for the non-audiophile, as it's AAC files are not too highly compressed.
3) If you use the Sound Enhancer (iTunes preferences) or an iPod Equalizer Preset, you could push the overall output toward overload for the hi-fi input.
Happy listening.
iPod 5G video 30GB

Compression rates out of date

Hello,
We did an Online Backup in our system. The backup was a success with message:
BR0053I BRBACKUP completed successfully with warnings
Since there is a warning, i checked the log and found out about this message:
BR0083W Compression rates out of date - run BRBACKUP with option '-k only
i want to know how to correct this and what was the cause of the error?
Thanks and regards,
Gelyne'

Hi Siddhesh,
Eventhough the warning can be ignored, still i need to eliminate the warnings present in my logs. Actually, i executed the ffg to update the compression rate of the server:
brbackup -u / -t online -k only -c
Unfortunately, during the process, there's an error again that occured:
#FILE..... /oracle/EQ0/sapdata2/sr3_7/sr3.data7 4.9887:1 420379201
BR0280I BRBACKUP time stamp: 2007-02-03 22.44.30
BR0063I 34 of 42 files processed - 73240.266 MB of 87249.773 MB done
BR0204I Percentage done: 83.94%, estimated end time: 23:50
BR0001I ******************************************________
BR0201I Compressing /oracle/EQ0/origlogA/cntrl/cntrlEQ0.dbf
BR0278E Command output of 'LANG=C compress -c /oracle/EQ0/origlogA/cntrl/cntrlEQ0.dbf | /usr/sap/EQ0/SYS/exe/run/brtools -f getcompr -':/oracle/EQ0/origlogA/cntrl/cntrlEQ0.dbf: Invalid argument
BR0280I BRBACKUP time stamp: 2007-02-03 22.44.30
BR0279E Return code from 'LANG=C compress -c /oracle/EQ0/origlogA/cntrl/cntrlEQ0.dbf | /usr/sap/EQ0/SYS/exe/run/brtools -f getcompr -': 5
BR0224E Compressing /oracle/EQ0/origlogA/cntrl/cntrlEQ0.dbf to BRTOOLS failed due to previous errors
BR0115I Compression rate for all files 4.7555:1
BR0056I End of database backup: bdunmzdh.cmb 2007-02-03 23.09.19
BR0280I BRBACKUP time stamp: 2007-02-03 23.09.20
BR0054I BRBACKUP terminated with errors
Please help.
Thanks and regards,
Gelyne

InfoCube design- partition of chararcters over IC - compression rate etc

Similar Messages

Maybe you are looking for