You can create a database under the assumption that SQL looks after all the problems of concurrency. It will probably work fine under test conditions: then, in the production environment, it starts losing data in subtle ways that defy repetition. It is every Database Developer's nightmare. In an excerpt from his acclaimed book, Alex Kuznetsov explains why it happens, and how you can avoid such problems.
2010-07-09
3,657 reads
In this part of NULL Defense series, we will discuss how to create NULL Defense in Script Transformation.
2010-07-08
3,480 reads
The staging area tends to be one of the more overlooked components of a data warehouse architecture, and yet it is an integral part of the ETL component design. Learn why it is best to design the staging layer right the first time, enabling support of various ETL processes and related methodology, recoverability and scalability.
2010-07-07
6,197 reads
How is it possible to pass multiple parameters to a SQL Server 2005 CLR aggregate?
2010-07-06
2,370 reads
Part II of the Physical Joins series looks at the Merge operator.
2010-07-05
4,112 reads
Geospatial Visualization is one of the key new features of SQL Server 2008 R2 Reporting Services. This step-by-step tutorial demonstrates the creation of a Map Report.
2010-07-02
3,764 reads
Customer interactions create a wealth of timely data that marketing departments are eager to exploit. The customer status fact table provides a central switchboard for using this fast-moving data.
2010-07-01
2,416 reads
Deanna Dicken examines a SQL Server Profiler event to determine object access...who is using the object, when, and how. This gives the SQL developer or database administrator much needed information for impact analysis prior to a change or the decommissioning of a SQL Server object.
2010-06-30
2,886 reads
By querying a single DMV, sys.dm_os_performance_counters to be precise, you can collect counter information that you would receive from PerfMon for the various SQL Server counters.
2010-06-29
3,559 reads
Continuing to illuminate the depths of SQL Server's Query Optimizer, Fabiano shines a light on the sixth major Showplan Operator on his list: the Lazy Spool. What does the Lazy Spool do that's so special, how does the Query Optimizer use it, and why is it so Lazy? Fabiano Amorim explains all.
2010-06-28
2,774 reads
It is Friday, the queries are running, and nobody is watching the bill. That...
By Steve Jones
Annabel retired from Redgate Software this week. Across most of my career at Redgate,...
By Tim Radney
As a SQL Server DBA with years of experience tuning production environments, I’ve seen...
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When running bcp on Linux, what is the field terminator?
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