Comments for Dylan's BI Study Notes http://dylanwan.wordpress.com My notes about Business Intelligence, Data Warehousing, OLAP, and Master Data Management Fri, 04 Jul 2008 20:17:32 +0000 http://wordpress.org/?v=MU Comment on 13 Period Calendar by 13 Period Calednar (Dylan Wan) http://dylanwan.wordpress.com/2008/02/26/13-period-calendar/#comment-373 13 Period Calednar (Dylan Wan) Tue, 01 Jul 2008 17:41:07 +0000 http://dylanwan.wordpress.com/?p=205#comment-373 [...] Read the rest of this entry » [...] [...] Read the rest of this entry » [...]

]]> Comment on 13 Period Calendar by TheAbysmal http://dylanwan.wordpress.com/2008/02/26/13-period-calendar/#comment-371 TheAbysmal Thu, 12 Jun 2008 17:06:39 +0000 http://dylanwan.wordpress.com/?p=205#comment-371 you are perpetuating a common misconception. a 13-period calendar divides the year into 52 weeks (+1 day +1 leap year day). The year divides evenly into 4 quarters of 13 weeks, or 13 months of 4 weeks, or 2 halves of 26 weeks. If you measure your year in 52 weeks, then it becomes a more eloquent means of counting the days. Can you imagine if bi-weekly and monthly events (like bills & rent & paycheques) all synchronised with one another? It would make accounting so easy that we would require far fewer hours working on our budgets. simple, no? you are perpetuating a common misconception.

a 13-period calendar divides the year into 52 weeks (+1 day +1 leap year day).

The year divides evenly into 4 quarters of 13 weeks, or 13 months of 4 weeks, or 2 halves of 26 weeks.

If you measure your year in 52 weeks, then it becomes a more eloquent means of counting the days. Can you imagine if bi-weekly and monthly events (like bills & rent & paycheques) all synchronised with one another? It would make accounting so easy that we would require far fewer hours working on our budgets.

simple, no?

]]> Comment on Data Security by cedricbourgeois http://dylanwan.wordpress.com/bi-platform/data-security/#comment-370 cedricbourgeois Tue, 27 May 2008 14:33:27 +0000 http://dylanwan.wordpress.com/bi-platform/data-security/#comment-370 Hi Dylan ! I am currently involved in setting up security in OBIEE, and my needs are close to what you describe. Still, I get stuck on the following problem: I wand to be able to filter on one or more brand, depending on the user (or on a group he'd belong to). But if I use a single session variable, I'll be able to store only one brand in it. So it means I should have to set up a session variable for each brand I want to grant the user. I don't think this is very clean, as it would limit the number of brands a user can be granted. Do you have any advice ? thanks. Cedric. Hi Dylan !
I am currently involved in setting up security in OBIEE, and my needs are close to what you describe. Still, I get stuck on the following problem:
I wand to be able to filter on one or more brand, depending on the user (or on a group he’d belong to). But if I use a single session variable, I’ll be able to store only one brand in it. So it means I should have to set up a session variable for each brand I want to grant the user. I don’t think this is very clean, as it would limit the number of brands a user can be granted.
Do you have any advice ?

thanks.
Cedric.

]]> Comment on History of Data Warehouse by infonitive http://dylanwan.wordpress.com/2007/01/06/hostory-of-data-warehouse/#comment-369 infonitive Mon, 26 May 2008 00:39:18 +0000 http://dylanwan.wordpress.com/2007/01/06/hostory-of-data-warehouse/#comment-369 Please review my initial work on strategic business intelligence and data warehousing at http://www.infonitive.com. Your feedback will be fantastic. Please review my initial work on strategic business intelligence and data warehousing at http://www.infonitive.com. Your feedback will be fantastic.

]]> Comment on The 4-4-5 Calendar by bradthedad http://dylanwan.wordpress.com/2007/02/05/the-4-4-5-calendar/#comment-366 bradthedad Mon, 05 May 2008 21:48:36 +0000 http://dylanwan.wordpress.com/2007/02/05/the-4-4-5-calendar/#comment-366 Do you have any suggestions on a reporting approach for a 4/4/5 schedule? We have a mix of client, and only a small portion are retailers who use the 4/4/5 model, but we want to provide them a report solution without heavy dev or customization. Is there anything built into Oracle that can help with this? Do you have any suggestions on a reporting approach for a 4/4/5 schedule? We have a mix of client, and only a small portion are retailers who use the 4/4/5 model, but we want to provide them a report solution without heavy dev or customization. Is there anything built into Oracle that can help with this?

]]> Comment on Data Warehouse Basics by Data warehousing - Cakewalk. « Kokki’s Weblog http://dylanwan.wordpress.com/2008/02/15/data-warehouse-basics/#comment-365 Data warehousing - Cakewalk. « Kokki’s Weblog Thu, 17 Apr 2008 18:39:29 +0000 http://dylanwan.wordpress.com/?p=204#comment-365 [...] Data warehousing Basics - Dylanwan. [...] [...] Data warehousing Basics - Dylanwan. [...]

]]> Comment on UDML in Oracle BI Server by Good news: you really need no mouse for Oracle BI EE Administrator - Andreas Nobbmann http://dylanwan.wordpress.com/2007/10/22/udml-in-oracle-bi-server/#comment-364 Good news: you really need no mouse for Oracle BI EE Administrator - Andreas Nobbmann Fri, 11 Apr 2008 15:18:11 +0000 http://dylanwan.wordpress.com/2007/10/22/udml-in-oracle-bi-server/#comment-364 [...] The first one comes from Dylan Wan (http://dylanwan.wordpress.com/2007/10/22/udml-in-oracle-bi-server/), [...] [...] The first one comes from Dylan Wan (http://dylanwan.wordpress.com/2007/10/22/udml-in-oracle-bi-server/), [...]

]]> Comment on BI Applications and Embedded BI, Part 3 by Sit N Go Journal http://dylanwan.wordpress.com/2008/01/28/oracle-bi-applications-and-embedded-bi-part-3/#comment-363 Sit N Go Journal Fri, 28 Mar 2008 00:01:41 +0000 http://dylanwan.wordpress.com/?p=196#comment-363 <strong>Sit N Go</strong> Really enjoyed that article,tell me do you have any other blogs? Why not come and write for me I have a wicked article site you could submit article for? Sit N Go

Really enjoyed that article,tell me do you have any other blogs? Why not come and write for me I have a wicked article site you could submit article for?

]]> Comment on What is a Conformed Dimension? by Tod means Fox | ETL Subsystem 8: Data Conformance http://dylanwan.wordpress.com/2007/01/18/what-is-a-conformed-dimension/#comment-362 Tod means Fox | ETL Subsystem 8: Data Conformance Mon, 17 Mar 2008 12:56:54 +0000 http://dylanwan.wordpress.com/2007/01/18/what-is-a-comformed-dimension/#comment-362 [...] are not too many other blog postings (ex: 1 2 3) on the topic of data conformity that truly dive into the topic. I would love to see more, as [...] [...] are not too many other blog postings (ex: 1 2 3) on the topic of data conformity that truly dive into the topic. I would love to see more, as [...]

]]> Comment on Download Oracle Data Integrator (Sunopsis) from Oracle Technology Network! by Border Crossing Stats » Download Oracle Data Integrator (Sunopsis) from Oracle Technology … http://dylanwan.wordpress.com/2007/01/20/download-oracledi-sunopsis-from-otn/#comment-356 Border Crossing Stats » Download Oracle Data Integrator (Sunopsis) from Oracle Technology … Tue, 11 Mar 2008 09:27:20 +0000 http://dylanwan.wordpress.com/2007/01/20/download-oracle-data-integrator-sunopsis-from-oracle-technology-network/#comment-356 [...] Did you like this brief introduction? Find out about it in full detail here. [...] [...] Did you like this brief introduction? Find out about it in full detail here. [...]

]]> Comment on Knowlege Model in Oracle Data Integrator by Border Crossing Stats » Knowlege Model in Oracle Data Integrator Dylan’s BI Study Notes http://dylanwan.wordpress.com/2007/03/30/knowlege-model-in-oracle-data-integrator/#comment-355 Border Crossing Stats » Knowlege Model in Oracle Data Integrator Dylan’s BI Study Notes Tue, 11 Mar 2008 09:22:12 +0000 http://dylanwan.wordpress.com/2007/03/30/knowlege-model-in-oracle-data-integrator/#comment-355 [...] Dig deeper into the topic here [...] [...] Dig deeper into the topic here [...]

]]> Comment on Aggregation for Data Warehouse, Part 4 by Border Crossing Stats » Aggregation for Data Warehouse Part 4 Dylan’s BI Study Notes http://dylanwan.wordpress.com/2007/05/30/aggregation-for-data-warehouse-part-4/#comment-354 Border Crossing Stats » Aggregation for Data Warehouse Part 4 Dylan’s BI Study Notes Tue, 11 Mar 2008 09:19:23 +0000 http://dylanwan.wordpress.com/2007/05/30/aggregation-for-data-warehouse-part-4/#comment-354 [...] Read more about this topic from the author here. [...] [...] Read more about this topic from the author here. [...]

]]> Comment on Glossary by Border Crossing Stats » Glossary Dylan’s BI Study Notes http://dylanwan.wordpress.com/bi-and-olap-glossary/#comment-353 Border Crossing Stats » Glossary Dylan’s BI Study Notes Tue, 11 Mar 2008 07:59:30 +0000 http://dylanwan.wordpress.com/bi-and-olap-glossary/#comment-353 [...] Find more about it all here [...] [...] Find more about it all here [...]

]]> Comment on Data Warehouse Design Tip: How to model the many to many relationship between the fact and the dimension table? by tomhaughey http://dylanwan.wordpress.com/2007/06/08/data-warehouse-design-tip-how-to-model-the-many-to-many-relationship-between-the-fact-and-the-dimension-table/#comment-352 tomhaughey Sat, 08 Mar 2008 15:43:27 +0000 http://dylanwan.wordpress.com/2007/06/08/data-warehouse-design-tip-how-to-model-the-many-to-many-relationship-between-the-fact-and-the-dimension-table/#comment-352 Dylan, you say in your design tip on M-M on June 8, 2007 that you will present a solution in your next DW Design Tip. I cannot find this next tip. How can I get it? tom thaughey@gmail.com Dylan, you say in your design tip on M-M on June 8, 2007 that you will present a solution in your next DW Design Tip. I cannot find this next tip. How can I get it?

tom
thaughey@gmail.com

]]> Comment on A good OBIEE web demo from New York City’s City Wide Performance Reporting by kerch98 http://dylanwan.wordpress.com/2008/02/15/a-good-obiee-web-demo-from-new-york-citys-city-wide-performance-reporting/#comment-351 kerch98 Wed, 27 Feb 2008 20:50:36 +0000 http://dylanwan.wordpress.com/?p=203#comment-351 Thanks for the link. It's not the most complicated Dashboard with metrics, however, it's a nice example to demonstrate. Thanks for the link. It’s not the most complicated Dashboard with metrics, however, it’s a nice example to demonstrate.

]]> Comment on The 4-4-5 Calendar by 13 Period Calendar « Dylan’s BI Study Notes http://dylanwan.wordpress.com/2007/02/05/the-4-4-5-calendar/#comment-350 13 Period Calendar « Dylan’s BI Study Notes Tue, 26 Feb 2008 17:35:59 +0000 http://dylanwan.wordpress.com/2007/02/05/the-4-4-5-calendar/#comment-350 [...] questions about OBIEE or OBIABI Apps ArchitectureAging Reports and DSO (Daily Sales Outstanding)The 4-4-5 CalendarHow to handle Slowly Changing Dimensions (SCDs) in data model design?Bitmap Index - when to use [...] [...] questions about OBIEE or OBIABI Apps ArchitectureAging Reports and DSO (Daily Sales Outstanding)The 4-4-5 CalendarHow to handle Slowly Changing Dimensions (SCDs) in data model design?Bitmap Index - when to use [...]

]]> Comment on Bitmap Index - when to use it? by johnwu http://dylanwan.wordpress.com/2008/02/01/bitmap-index-when-to-use-it/#comment-349 johnwu Fri, 22 Feb 2008 23:44:38 +0000 http://dylanwan.wordpress.com/?p=199#comment-349 Looks like I did not get the url through. The FastBit web site is at <a HREF="http://sdm.lbl.gov/fastbit/" rel="nofollow">http://sdm.lbl.gov/fastbit/</a> and the paper quoted is <a HREF="http://crd.lbl.gov/%7Ekewu/ps/LBNL-49627.html" rel="nofollow">http://crd.lbl.gov/%7Ekewu/ps/LBNL-49627.html</a>. The software is distributed from <a HREF="https://codeforge.lbl.gov/projects/fastbit/" rel="nofollow">https://codeforge.lbl.gov/projects/fastbit/</a>. Hope the URL get through this time around. Looks like I did not get the url through. The FastBit web site is at http://sdm.lbl.gov/fastbit/ and the paper quoted is http://crd.lbl.gov/%7Ekewu/ps/LBNL-49627.html.
The software is distributed from https://codeforge.lbl.gov/projects/fastbit/.
Hope the URL get through this time around.

]]> Comment on A good OBIEE web demo from New York City’s City Wide Performance Reporting by majendi http://dylanwan.wordpress.com/2008/02/15/a-good-obiee-web-demo-from-new-york-citys-city-wide-performance-reporting/#comment-348 majendi Mon, 18 Feb 2008 12:37:00 +0000 http://dylanwan.wordpress.com/?p=203#comment-348 Good to see the system being used. BT in the UK have a similar set-up for their customers. Do you know who set the system up for NY City? Good to see the system being used. BT in the UK have a similar set-up for their customers.
Do you know who set the system up for NY City?

]]> Comment on Bitmap Index - when to use it? by johnwu http://dylanwan.wordpress.com/2008/02/01/bitmap-index-when-to-use-it/#comment-347 johnwu Sat, 16 Feb 2008 02:31:54 +0000 http://dylanwan.wordpress.com/?p=199#comment-347 Just in case you don't have to use a database system but want to benefit from the best bitmap index around, you can try something called FastBit . Here is a quote from one of their publications: "Compared to BBC, a scheme well-known for its operational efficiency, WAH performs logical operations about 12 times faster." Just in case you don’t have to use a database system but want to benefit from the best bitmap index around, you can try something called FastBit .

Here is a quote from one of their publications:
“Compared to BBC, a scheme well-known for its operational efficiency, WAH performs logical operations about 12 times faster.”

]]> Comment on Bitmap Index - when to use it? by Dylan Wan http://dylanwan.wordpress.com/2008/02/01/bitmap-index-when-to-use-it/#comment-341 Dylan Wan Sat, 02 Feb 2008 02:04:39 +0000 http://dylanwan.wordpress.com/?p=199#comment-341 I just found a very good white paper on oracle.com: Bitmap Index vs. B-tree Index: Which and When? http://www.oracle.com/technology/pub/articles/sharma_indexes.html I just found a very good white paper on oracle.com: Bitmap Index vs. B-tree Index: Which and When?
http://www.oracle.com/technology/pub/articles/sharma_indexes.html

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