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Gvirtz Consulting & TrainingGvirtz Consulting & Training
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Leonid Gvirtz
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Gvirtz Consulting & Training | gvirtz-consulting.com Reviews
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Gvirtz Consulting & Training
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Gvirtz Consulting & Training
http://www.gvirtz-consulting.com/about.html
I believe that building of good work relationship with my customers is a key for success of my business. While my and my customers opinions on various professional topics may be sometimes quite different, I always defend my opinions in a respectful way and with proper argumentation. So far, I have succeeded to build good work relationship with all of my customers. Both locally and internationally. Tools that I usually use for my work. Feel free to contact me.
Gvirtz Consulting & Training
http://www.gvirtz-consulting.com/customers.html
Below is the partial list of projects I was involved in as a consultant. Recommendations from most of my customers are available upon request. Ask my customers about me! Provided consulting services for 2 big projects:. A large project in a big government organization. Design, implementation and administration of a very big database (tens of TBs) running on Sybase IQ in multiplex configuration. Administration of a number of additional Oracle, Sybase IQ and Sybase ASE databases. Consulting in SAP Sybase A...
Gvirtz Consulting & Training
http://www.gvirtz-consulting.com/downloads.html
Set of stored procedures that can be used to extract DDL of various objects from SAP Sybase IQ quickly and efficiently. I have prepared a set of stored procedures that can be used to extract DDL statement from Sybase IQ. The stored procedures have been tested with versions 12.6, 12.7, 15.2 and 15.4. There are different sets of stored procedures: one for versions 12.6 and 12.7 and another one for versions 15.*. Set of stored procedures that can be used to un-pivot an arbitrary result set in isql.
Gvirtz Consulting & Training
http://www.gvirtz-consulting.com/links.html
One of the most important things that I learned on the course of my career is that a true professional in my area cant never stop learning. While this statement may sound cruel, it is very much true. I learn something new about databases and/or related technologies almost every day. Below you can see the list of sources that I use regularly. Infocenter Sybase documentation portal. Importance of reading documentation is frequently underestimated by people and it is very unfortunate. While not all of Glenn...
Gvirtz Consulting & Training
http://www.gvirtz-consulting.com/index.html
My name is Leonid Gvirtz. Im freelance consultant in database-related areas. I work with various database-related technologies since 1995. I have a vast amount of experience in the design of databases and database-oriented applications, implementation, troubleshooting, performance and tuning, monitoring, and training. I began working as a consultant in 2003 and participated in tens of consulting projects since then, both on customers sites and remotely. Replication in Oracle and MS SQL Server.
TOTAL PAGES IN THIS WEBSITE
5
Database Diver's Diary: SAP HANA
http://leonid-gvirtz.typepad.com/blog/sap-hana
My day-by-day experince with databases and related technologies. Comparison between SAP HANA with SAP Sybase IQ first impressions. So, why to compare HANA and IQ? According to SAP, the strong point of HANA is its ability to utilize CPU cache. The query should be performed fully in memory. Otherwise it is not fare to compare IQ and HANA. In HANA, queries are executed fully in memory, once relevant columns are loaded into the RAM. The query should perform a lot of logical I/Os. For HANA, I had to use HANA ...
Database Diver's Diary: Query optimizer
http://leonid-gvirtz.typepad.com/blog/query-optimizer
My day-by-day experince with databases and related technologies. My experience with materialized views in Sybase ASE. In this post I’d like to focus on precomputed result sets. In SAP Sybase ASE, which are also called materialized views (MVs). For data warehouse applications, but it can be useful in OLTP as well, as will be shown later. I’d like very much to see MVs also in SAP Sybase IQ, but it is a completely different story. NOT IN ('A','G','P','L') and l.event is display = 'Y'. 2 Using of ISNULL func...
Database Diver's Diary: Benchmark
http://leonid-gvirtz.typepad.com/blog/benchmark
My day-by-day experince with databases and related technologies. My experience with materialized views in Sybase ASE. In this post I’d like to focus on precomputed result sets. In SAP Sybase ASE, which are also called materialized views (MVs). For data warehouse applications, but it can be useful in OLTP as well, as will be shown later. I’d like very much to see MVs also in SAP Sybase IQ, but it is a completely different story. NOT IN ('A','G','P','L') and l.event is display = 'Y'. 2 Using of ISNULL func...
How to import the data from Hadoop HDFS to IQ - Database Diver's Diary
http://leonid-gvirtz.typepad.com/blog/2013/01/how-to-import-the-data-from-hadoop-hdfs-to-iq.html
My day-by-day experince with databases and related technologies. Laquo; Temporary tables in ASE and column encryption. Comparison between SAP HANA with SAP Sybase IQ first impressions ». How to import the data from Hadoop HDFS to IQ. These days, I see more and more organizations evaluating the use of Hadoop as a part of their data warehouse. Using of Hadoop in addition or a "normal" SQL-based RDBMS has a number of advantages, just to list some of them:. OpenHDFSFile is a UDF, impelmented in Java or C.
Database Diver's Diary: Archives
http://leonid-gvirtz.typepad.com/blog/archives.html
My day-by-day experince with databases and related technologies. Sp lg print table. Subscribe to this blog's feed. Http:/ www.gvirtz-consulting.com. My name is Leonid Gvirtz. I'm freelance consultant in database-related areas. I work with various database-related technologies since 1995. I have a vast amount of experience in the design of databases and database-oriented applications, implementation, troubleshooting, performance and tuning, monitoring, and training. Sp lg print table.
Comparison between SAP HANA with SAP Sybase IQ – first impressions - Database Diver's Diary
http://leonid-gvirtz.typepad.com/blog/2013/09/comparison-between-sap-hana-with-sap-sybase-iq-first-impressions.html
My day-by-day experince with databases and related technologies. Laquo; How to import the data from Hadoop HDFS to IQ. My experience with materialized views in Sybase ASE ». Comparison between SAP HANA with SAP Sybase IQ first impressions. So, why to compare HANA and IQ? According to SAP, the strong point of HANA is its ability to utilize CPU cache. The query should be performed fully in memory. The query should perform a lot of logical I/Os. The query should take at least a number of seconds to finish.
Database Diver's Diary: SAP
http://leonid-gvirtz.typepad.com/blog/sap
My day-by-day experince with databases and related technologies. Comparison between SAP HANA with SAP Sybase IQ first impressions. So, why to compare HANA and IQ? According to SAP, the strong point of HANA is its ability to utilize CPU cache. The query should be performed fully in memory. Otherwise it is not fare to compare IQ and HANA. In HANA, queries are executed fully in memory, once relevant columns are loaded into the RAM. The query should perform a lot of logical I/Os. For HANA, I had to use HANA ...
Database Diver's Diary: Sybase IQ
http://leonid-gvirtz.typepad.com/blog/sybase-iq
My day-by-day experince with databases and related technologies. Comparison between SAP HANA with SAP Sybase IQ first impressions. So, why to compare HANA and IQ? According to SAP, the strong point of HANA is its ability to utilize CPU cache. The query should be performed fully in memory. Otherwise it is not fare to compare IQ and HANA. In HANA, queries are executed fully in memory, once relevant columns are loaded into the RAM. The query should perform a lot of logical I/Os. For HANA, I had to use HANA ...
Database Diver's Diary: P&T
http://leonid-gvirtz.typepad.com/blog/pt
My day-by-day experince with databases and related technologies. Effective usage of sampling for update statistics in ASE. Sampling for update statistics in ASE has been introduced a long time ago, in ASE version 12.5.0.3 which was released in 2003. For some reason, this very useful feature has not been advertised nor documented by Sybase very well. Actually, the whitepaper. There is a number of different variations of update statistics command available. Lets see what options are available for us i...
My experience with materialized views in Sybase ASE - Database Diver's Diary
http://leonid-gvirtz.typepad.com/blog/2013/11/my-experience-with-materialized-views-in-sybase-ase.html
My day-by-day experince with databases and related technologies. Laquo; Comparison between SAP HANA with SAP Sybase IQ first impressions. Effective usage of sampling for update statistics in ASE ». My experience with materialized views in Sybase ASE. In this post I’d like to focus on precomputed result sets. In SAP Sybase ASE, which are also called materialized views (MVs). For data warehouse applications, but it can be useful in OLTP as well, as will be shown later. Instead, MVs should use count big(*)&...
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I am Greg Virtucio!
Gv, gvirtucio, geevee. I am Greg Virtucio. They call me GV. I am a Web Host. I love hamsters. I hate spiders. I love listening to music. I love football. I think I am gaining weight. I love going to coffee shops on a rainy Sunday afternoon. I like the color black. I love iced latte and iced mocha. I miss Mocha Blends at Marcos Highway. I love KFC. I have GERD. I love Oakley sunglasses. I wear contacts. I love Google. I get jealous easily. I love my life. I am GV. Do you own a coffee shop? What I am good ...
Gvirtz Consulting & Training
My name is Leonid Gvirtz. Im freelance consultant in database-related areas. I work with various database-related technologies since 1995. I have a vast amount of experience in the design of databases and database-oriented applications, implementation, troubleshooting, performance and tuning, monitoring, and training. I began working as a consultant in 2003 and participated in tens of consulting projects since then, both on customers sites and remotely. Replication in Oracle and MS SQL Server.
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