Archive for the ‘Database’ Category

How to Remove Table Partitioning

How to Remove (Undo) Table Partitioning I have seen plenty of articles and blog posts out there for how to setup and implement table partitioning, but very few for removing or undoing it.  So I thought I would cover a few ways to accomplish this while still preserving the data. There could be many reasons […]

Introduction to Change Data Capture (CDC) in SQL Server 2008

Introduction Often, you’ll be told that the specification of an application requires that  the value of  data in the database of an application must be recorded before it is changed. In other words, we are required to save all the history of the changes to the data. This feature is usually implemented for data security […]

Precedence Constraints in SQL Server Integration Service

Working with Precedence Constraints in SQL Server Integration Service by Robert Sheldon In SSIS, tasks are linked by precedence constraints.  A task will only execute if  the condition that is set by the precedence constraint preceding the task is met. By using these constraints, it is possible to ensure different execution paths depending on the success […]

XML Configuration files in SQL Server Integration Services

 by Robert Sheldon   Package configuration files are a great way of providing the values of SSIS package properties so that packages can be used in a far more versatile way. They make the deployment of SSIS packages easier and can provide parameters that are based on the server configuration, or which change for each runtime. They’re easy to understand, […]

Adding the Script Task to Your SSIS Packages

 by Robert Sheldon   Script tasks are a great way of extending SSIS functionality, when none of the built-in components are quite right for the task you need to perform. But how to go about creating a script task? No worries, once again Robert Sheldon is on hand to provide easy instructions on how to do it. One […]

SSIS Event Handlers Basics

 by Robert Sheldon   SSIS event handlers are the simplest means of turning an SSIS script into a reliable system that is auditable, reacts appropriately to error conditions, reports progress and allows instrumentation and monitoring your SSIS packages. They are easy to implement, and provide a great deal of flexibility. Rob Sheldon once again provides the easy, clear introduction. Since the […]

Correlating SQL Server Profiler with Performance Monitor

In the past, when watching the % Processor Time counter in Performance Monitor on my live production SQL Servers, I would occasionally see sudden spikes in CPU utilization, to 50, 70 or even 80%. These spikes might last several minutes or more, then disappear. In some extreme cases I would see spikes that lasted 30, […]

Get Started with Chart Development in Reporting Services 2008

One of the greatest rewards of developing any type of report is to transform the vast amounts of business data into useful  information that can support commercial decision-making; producing such  reports as the  performance of an internal process, percentage of an employees’ contribution to overall product sales, or a department’s budget compared to other departments. […]

Look-up Tables in SQL

History Tables, in a properly designed schema, model either an entity or a relationship, but not both. Slightly outside of the tables in the data model, we have other kinds of tables. Staging tables bring in "dirty data" so we can scrub it and then insert it into base tables. Auxiliary tables hold static data […]

Database Refactoring

Much of the material that I’ll discuss in this article comes from the excellent work done by Scott W Ambler and Pramodkumar J. Sadalage who wrote the book ‘Refactoring Databases: Evolutionary Database Design’ and maintain the site Just as Martin Fowler’s original book ‘Refactoring: Improving the Design of Existing Code’ introduced the world to […]

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