Unlike the hierarchical database model, which created a tree structure in which to store data, the network model formed a generalized 'graph' structure that describes the relationships between the nodes. Nowadays, the relational model is used to solve the problems for which the network model was created, but the old 'network' solutions are still being implemented by programmers, even when they are less effective.
2011-10-17
1,693 reads
Date manipulation is a common scenario when retrieving or storing data in a SQL Server database. There are several functions that are available and in this tip we look at how to use the DATEADD function.
2011-10-14
3,998 reads
SQL is a powerful tool for querying data, and for aggregating it. However, you can't easily use it to draw inferences, to make predictions, or to tease out subtle correlations. To provide ever more sophisticated inferences to businesses, the race is on to combine the power of the relational model with advanced statistical packages. Both IBM and PostGres are ready with solutions. And SQL Server? Hmm...
2011-10-13
2,748 reads
Setting up multi-node clustered SQL instances from scratch is common practice for companies that want to implement high availability, but adding a new node to an existing clustered SQL instance that has been running for a while may have a few sticking points, especially for a SQL 2005 instance.
2011-10-12
2,577 reads
Data analysis from a cube starts with aggregated and summarized data, followed by drill-down and drill-through of the data for a deeper and intelligent analysis. Drill down is inherently supported when you browse the data of the cube, but drill through has to be defined as per the requirements of analysis. In this tip we will see how to enable drill through on a cube.
2011-10-11
2,890 reads
When healing a sick SQL Server, you must forget the idea that there could ever be a simple correspondence between symptom and disease: The art of troubleshooting is much more the art of discovering, and assembling, the various pieces of the puzzle so that you have a complete understanding of what is going on inside of a server.
2011-10-10
6,098 reads
Writing maintainable code is hard. It must be understandable, testable and readable. Any one of these can be tricky, and together they seem pretty daunting. Thankfully, Michael Williamson makes it look easy to become a code craftsman.
2011-10-07
4,478 reads
It is a general best practice to have a clustered index on all of your SQL Server tables. Unfortunately, not everybody knows that. This tip helps you find tables that do not have a clustered index.
2011-10-06
4,921 reads
Within an instance of SQL Server, the database settings can have a direct effect on the database’s behavior, performance and availability. Sometimes, it is difficult to tie a symptom to a cause, so it is wise to routinely check and record these settings. Before you change the current setting, it pays to understand exactly what it means and the implications of any change.
2011-10-04
3,490 reads
Memory is a critical resource to Microsoft SQL Server workloads, especially in a virtualized environment where resources are shared and contention for shared resources can lead to negative impact on the workload. Windows Server 2008 R2 SP1 introduced Hyper-V Dynamic Memory, which enables virtual machines to make more efficient use of physical memory resources.
2011-10-03
2,927 reads
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On which Linux versions is SQL Server 2025 on Linux supported?
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