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Thomas Zurek

Thomas Zurek SAP Employee  Active Contributor Silver: 500-1,499 points
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Company: SAP AG
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Thomas is VP for R&D of SAP BW and analytic parts of HANA. He has 15 years of experience in analytics and over 20 years with RDBMS. He holds a PhD in computer science from Edinburgh University.

Red Bull's Migration of a BW to a BW-on-HANA System
In his TECHED / SAPPHIRE NOW keynote, Vishal had invited Red Bull to show the first BW-on-HANA system running at a customer site. While one can argue that this effort has been realized with some of the best experts that are available it has not been rocket science and is an excellent showcase of how things can work out if properly planned and implemented. This blog documents the process. Nov. 23, 2011
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How BW-on-HANA Combines With Native HANA
There is a lot of wild guessing on how to combine the native HANA tools and assets - like HANA modeler or SLT* - within a BW-based environment. Initially, one might assume a conflict between a completey managed table schema - as imposed by BW - and an arbitray table schema - as created by SLT, Data Services or any other tool. In this blog, I will indicate how such schemas can happily coexist and consequently complement each other in a BW-on-HANA environment.  Nov. 1, 2011
Comments: 5   Rank: 2017   Page Views: 6839 (Stats updated nightly)

Using Excel on HANA
From the very beginning, HANA has been shipped with an OLE DB for OLAP (ODBO) driver that allows ODBO enabled clients to connect and analyze analytic views in the HANA repository. Those analytic views are cubes that have been modeled with the HANA modeler (which is part of HANA studio).This blog provides some background and points to a nice demo video that has been created by our partners from Simba. Oct. 18, 2011
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HANA and BW 7.30 - Part 2
Over the past few months, I've presented on this topic to many customers and colleagues. As there seems to be such a high demand, I've decided to convert the underlying slide presentation into two blogs, with the first focusing on the motivation, scenarios and use cases while the second looks at the combination of HANA and BW from a technical angle. Before I continue with the second blog please note that the usual disclaimer applies.  Jun. 24, 2011
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HANA and BW 7.30 - Part 1
Over the past few months, I've presented on this topic to many customers and colleagues in and outside Walldorf. As there seems to be such a high demand, I've decided to convert the underlying slide presentation into two blogs, with the first focusing on the motivation, scenarios and use cases while the second looks at the combination of HANA and BW from a technical angle. Before I start with the first blog please note that the usual disclaimer applies. Everything here has been announced at some SAP event. So I'm focusing on bringing pieces into context rather than revealing something that has not been known before. Jun. 23, 2011
Comments: 9   Rank: 1299   Page Views: 8275 (Stats updated nightly)

Infocubes and Data Store Objects ... and HANA
In recent weeks, I've frequently heard or read comments like "cubes will no longer be relevant in HANA" or "flat structures like data store objects (DSOs) will be sufficient". There is no binary (=simple) answer to this, like a clear YES or NO. This blog intends to shed some light into those assumptions. You are encouraged to challenge my thoughts or to add your point of view. May. 15, 2011
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Is Data like Timber?
For quite some time, I'm playing with this idea of comparing data with some raw material (like timber) and information with some product made from that raw material (like furniture). This helps to suggest (a) that data and information are related but not the same thing and (b) that there is processing inbetween similar to converting wood to furniture. With this blog, I like to throw this comparison out into the public, also to hopefully trigger a good discussion that either identifies weaknesses of this comparison or develops the idea even further. Apr. 8, 2011
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Comment on "Is SAP deliberately locking out competitors with BI4?"
This is a comment that I've posted in the context of John Appleby's blog on Bluefin's website asking the question "Is SAP deliberately locking out competitors with BI4?". It describes the thoughts and reasoning behind the interoperability between BW and the Business Objects tools via SQL, MDX and BICS. Mar. 9, 2011
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SAP BW 7.3 upgrade in less than 3 hours
This is simply the result of small Twitter search query on a successful upgrade to SAP BW 7.3 at Bluefin. See below for the related log of tweets. Dec. 28, 2010
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The BW - HANA Relationship
With the announcement of HANA, some customers, analysts and others have raised the question on how HANA relates to BW with a few of them even adding their own, home made answer in the sense that they speculate that HANA would succeed BW. In this blog, I like to throw in some food for thought on this. Oct. 15, 2010
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SAP BW 7.3 beta is available
Last week, SAP BW 7.3 has been released in a beta version. This is just the upbeat for the launch of the next big version of BW which is planned for later this year. This will provide major new features to the existing, more than 20000 active BW installations which make it one of the most widely adopted SAP products. I like to take this opportunity to highlight a few focus areas that shape this new version and that lay out the future direction. Jul. 28, 2010
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Performance Study: Web Intelligence on top of SAP BW
This is a kind of sequel to the blogs I've posted earlier this year. A long-term SAP customer provided real-world example that shows the performance improvements that have been achieved through the joint efforts of the WebI, ODA and BW development teams. Nov. 11, 2009
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Comparing SAP BW and an Oracle DW
This blog looks at the situation of a customer who migrated his hand-crafted Oracle data warehouse to SAP BW. It is a tangible, real-world case that contradicts many of the alleged pros and cons of the differing approaches to data warehousing. Beside TCO, the new SQL interface on SAP BW allows even for a surprising 1:1 comparison regarding query performance. Apr. 14, 2009
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Faster Universe-Based Access To BW via MDX
Business Objects's semantic layer can expose cubes as OLAP universes to client tools like WebIntelligence (or WebI for short). This applies to OLAP servers like Microsoft's Analysis Services or Hyperion's Essbase but also to SAP BW. There is a component called OLAP Data Access (ODA) that retrieves data via MDX - a query language for multi-dimensional data sources. In the case of BW, the ODA component connects to BW's OLAP BAPI. This connection has now been optimized and streamlined in order to improve the interoperability. This blog gives some insight in what has been done and what the effects are. It complements the blog on the two options to access BW data via universes. Mar. 16, 2009
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SQL Access to BW via Data Federator
In another blog, a number of improvements have been discussed regarding universe-based access to BW infoproviders. One major new option is that it is now possible to access BW infoproviders via SQL. Technically, this has been achieved via Business Objects's Data Federator (DF) that includes SQL engine running on top of federated data sources - one of those can be a BW 7.01 system. This blog provides some more insights into that approach. Mar. 6, 2009
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Better Performance For Universe-Based Access To BW
This blog introduces two new pieces of development shipping with BW 7.01 SPS3 that significantly improve the performance when using Business Objects WebIntelligence on top of NW BW. Mar. 6, 2009
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Native Excel 2007 On Top Of Netweaver BI 7.0
Using Excel in the context of BW is nothing new: (1) there is BEx Analyzer and (2) there is the native pivot tables inside Excel that connect via OLE DB for OLAP (ODBO) to BW. While (1) has mostly been the option of choice, option (2) has tended to be sidelined. The latter is significantly changed with Excel 2007 and NW BI 7.0. Jan. 29, 2008
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Understanding Query Performance in NW BI and BIA
Query performance has always been a hot topic but with the advent of the BI accelerator (BIA) it has become scalding hot. Customers, consultants and colleagues report performance improvements well beyond factor 100 but also of factors like 4.7 and even 1. People are sometimes puzzled by such numbers: why is it so different? This blog attempts to make you understand what's going on behind the scenes. Jan. 24, 2007
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NetWeaver BI (a.k.a. BW) and Advanced DB Functionality (Part 3)
Part 3: In this final part of the weblog serie, I will discuss the possible use of grouping sets and loaders in the context of NW BI. As in the case of materialized views (see part 2), both constitute attractive features that could be beneficial for NW BI in theory. However, performance benefits are either not existent or so minimal that it is currently not worthwhile to seriously consider them. But let's look at some more details. Dec. 10, 2005
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NetWeaver BI (a.k.a. BW) and Advanced DB Functionality (Part 2)
Competitors, analysts and customers frequently confront SAP with a statement that NW BI (a.k.a. BW) could provide better performance if it simply employed some of the performance-enhancing features that have been added to the mainstream RDBMS software over the last few release cycles. They often point to materialized views (or summary tables), new index types (e.g. bitmaps or domain vectors), aggregation operators (like grouping sets, rollup), loaders, etc. In this 2nd part of a serie of 3 weblogs I'd like to briefly discuss the frequently raised questions whether materialized view (I'll use this popular term; this does not mean that what I say refers to Oracle only; it also applies to DB2's automatic summary tables or SQL-server's view indexes) would not be a good alternative or substitute to NW BI aggregates. Nov. 15, 2005
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NetWeaver BI (a.k.a. BW) and Advanced DB Functionality (Part 1)
Part 1: Competitors, analysts and customers frequently confront SAP with a statement that NW BI (a.k.a. BW) could provide better performance if it simply employed some of the performance-enhancing features that have been added to the mainstream RDBMS software over the last few release cycles. They often point to materialized views (or summary tables), new index types (e.g. bitmaps or domain vectors), aggregation operators (like grouping sets, rollup), loaders, etc. In a serie of 3 weblogs I'd like to briefly tackle the argument cited above and proof it to be wrong.  Nov. 2, 2005
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Comparing the BI Accelerator (f.k.a. HPA) to Traditional RDBMS Technology
In this weblog, I'd like to quickly touch a question that many might have in mind when looking at the new BI accelerator technology: why the heck is this so much faster in comparison to traditional RDBMS products? Can't the latter be similarly fast if there is sufficient main memory, parallelism and maybe even column-oriented and compressed structures like bitmap indexes? Oct. 17, 2005
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Pushing BI To A New Frontier
At the recent TechEds in San Diego and Munich, a new High Performance Business Intelligence capability was demonstrated that allowed interactive slicing and dicing with response times in seconds on an infocube with one billion rows. This new engine (to be shipped with the next release of the SAP NetWeaver platform) combines BI and advanced search engine technologies, such as sophisticated compression, vertical and horizontal data partitioning and parallel in-memory processing.  Oct. 21, 2004
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