petkovic petkovic


Dusan Petkovic is professor of database systems at the Polytechnic in Rosenheim, Germany. He is the author of several books about database systems, including SQL Server 2005: A Beginner’s Guide (Osborne McGraw-Hill). Through a special arrangement with Osborne/McGraw-Hill, we invite you to preview a chapter from Dusan's new book on SQL Server Security Email address:

Open Windows of Opportunity
Aggregate and rank window functions benefit BI projects.
Taming the Skew 1
SQL Server's query optimizer effectively executes queries that access skewed data, but you can help improve the response time of such queries. Here's how.
Indexing for Sort Performance
Defining the right indexes on sort columns can yield dramatic performance results for queries that need ordered data.
Which is Faster: Index Access or Table Scan? 1
It can be difficult to determine whether a table scan or an index will provide better query performance. The answer depends in part, on the percentage of rows returned, but another important factor is whether you use a clustered or nonclustered index.
New Features for Query Processing
The query processor is one of the most important database system components that influence the management of large databases. SQL Server 7.0's focus is on new techniques for maximizing your query performance.

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Browse back issues of SQL Server Pro, from January 2007 through the last issue published in April 2014. Find the back issues here.


From the Blogs
Nov 3, 2015

Climb the Steps Toward Data Quality Success

Melissa Data's Data Quality Analyst Joseph Vertido explains how Gartner defines the critical data quality steps to prevent bad data from entering your systems in the first place, and then keep it clean over time....More
Sep 29, 2015

Data Breaches and Insider Threats

I’ll sound a bit like Captain Obvious for bringing this up, but it’s important to remember that security encompasses a lot more than protecting sensitive data from the specter of outsider threats like hackers. Properly implemented security policies also account for threat-models that include insiders – or people within your organization....More
Sep 15, 2015

Setting Up Additional Checks to Ensure Regular Transaction Log Backups 1

There’s simply no way to overstate the importance of regular Transaction Log Backups. Not only do they help protect from disaster, but regular execution of T-Log backups on Full (and Bulk-Logged) Recovery databases helps keep thing “fit and trim”. Most of the time, setting up a Notification for when T-Log Backup Jobs fail is enough to let you know when something goes wrong....More
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