SQL Server Articles


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Replicating A Volume Of Large Data via Transactional Replication

During weekend maintainence, members of the support team executed an UPDATE statement against the database on the OLTP Server. This database was a part of Transactional Replication and the database on the subscriber was used by the SSRS reports. The UPDATE statement impacted around 3500000 records. Once the UPDATE statement was executed, the Replication procedure […]

Using The System Monitor Tool For Measuring SQL Server Performance

System Monitor, a program to measure the performance of SQL Server allows you to view the objects of SQL Server and performance counters in addition to the behavior of other objects, including threads, processors, memory, and cache. These objects individually associate set of computers for measuring delays, device usage, and other counters indicating overall performance […]

SQL Server Performance Tuning – Index Tuning

In earlier installments of this series we looked at T-SQL Performance optimizations along with different T-SQL practices, we can now turn our attention to the second part of this series which is index Tuning In looking into Views we will break the article into two sections : Basic Index Tuning using DTA (Database Tuning Advisor) […]

Natural vs. Surrogate Keys in SQL Server : Getting the Proper Perspective

I once walked into a bar, and saw two construction workers pounding each other to a pulp.  The argument was over what was the better tool—a  hammer or screwdriver.  I feel a similar sensation when I see SQL developers arguing over whether to use natural or surrogate keys.    Few other arguments in database design can […]

SQL Server Audit Walkthrough

So, you are the Database Administrator in your company and your boss wants you to “have a look” at a SQL Server that you would be managing from now on.  You didn’t know about it before, somebody else had installed it before you came on board, but now your work is to make sure it’s […]

Physical Join Operators in SQL Server – Hash Operator

In second part of this series on physical join operators we looked at the Merge Operator. In the final part of the series we turn our attention to the Hash operator. For this article series I am using an analogy of two sets of standard playing cards. One set with a blue back and another […]

Auditing with Microsoft Assessment and Planning (MAP) Toolkit 5.0 – Part 1

Auditing and inventorying is not something new in any IT environment. Depending on the purpose, it can take many forms. Sometimes the auditing is about security and data access. Sometimes it is about software usage and licensing. Often it is about consolidation and cost saving. Whatever the reason, the strategic direction typically comes from top […]

Shopping Basket Analysis in SQL Server

A famous super market chain in USA once observed that men who are buying beer for weekend tend to buy nappies for their kids. This revelation enabled the chain in increase sales volume and revenue by placing the items in close proximity to eachother. An alternative approach would have been to move the items apart […]

Using Decision Trees in SQL Server

As a practical introduction to decision imagine you are assessing the risk of a PC being infected with a virus. The below data on factors influencing affecting the risk of a PC being infected with a virus is available on MSDN. Shares files Uses scanner Infected before Risk Yes Yes No High Yes No No […]

Does Transactional Replication Include Structural Changes Made to a Database

We typically use Transactional Replication for Reporting purposes. In Transactional Replication, the idea is to replicate the changes done on the Publisher Database (OLTP) onto the Subscriber Database (Reporting).  The main challenge in Replication is whether it will replicate the structural changes made on the Publisher database successfully onto the Subscriber database. For Demonstration purposes, […]