Identity Columns
When Nigel Rivett takes us on a tour of the apparently innocuous subject of Identity Columns in TSQL, even the seasoned programmer is due for one or two surprises.
2008-06-04
5,440 reads
Additional Articles
Intelligence on the Go: Mobile Delivery of BI
Many BI vendors now offer modules that let you deliver just about any report to smart phones, but as a major retailer, a health care provider and a major government agency have discovered, practical, tactical wins are the key to mobile success.
2008-06-03
2,362 reads
Tips for moving from local disk storage to SANs
Move SQL Server storage to storage area networks (SANs) with network redundancy and storage multipathing tips. Learn about iSCSI databases and SQL failover.
2008-06-03
4,514 reads
Optimistic Locking in SQL Server using the ROWVERSION Data Type
Using the default SQL Server READ COMMITTED isolation level, my application sometimes falls victim to the dreaded "lost update" condition where two of my users edit the same row for update but the user who submits his/her change last overwrites changes made by the other user. Is there a good way to check for this and prevent it?
2008-06-02
3,771 reads
Table-valued parameters – SQL Server 2008
In previous versions of SQL Server, it has not been possible to pass a table variable, as a parameter, to a stored procedure. Microsoft introduces table-valued parameters, along with other features, in SQL Server 2008. This article illustrates the function and usage of table-valued parameters.
2008-06-02
2,812 reads
Introduction to SQL Server 2005 Data Mining
Get an overview of typical data mining problems and the tools and models that are available in SQL Server 2005 for solving these problems.
2008-05-30
3,571 reads
Selecting the database recovery model to ensure proper backups
One of the first things that should be done when managing SQL Server is to setup an appropriate backup plan in order to minimize any data loss in the event of a failure. Along with setting up a backup plan there are certain database configurations that need to be setup to ensure you are able to backup databases correctly. In this tip we will look at the different recovery models that SQL Server offers and how to choose a recovery model for your database.
2008-05-30
4,151 reads
Dimension Attributes: Introduction and Overview, Part III
Join Business Intelligence Architect Bill Pearson as he continues his subseries surrounding components of the Analysis Services dimensional model. In this article we continue our introduction to dimension attributes, focusing upon the Misc group of attribute properties.
2008-05-29
1,215 reads
Trash Destination Adapter
The Trash Destination and this article came from early experiences of using SSIS and community feedback at the time. When developing a package it is very useful to have a destination adapter that does nothing but consume rows with no setup requirement. You often want run a package part way through development, or just add a path so you can set a Data Viewer.
2008-05-29
1,183 reads
Data Generator Source Adapter
This component needs little explanation. It generates random integer (DT_I4) and string (DT_WSTR) data and places them in the pipeline. You specify how many columns of each you would like and for any string columns you pass a fixed length value. You then need to specify how many rows in total you require to be generated.
2008-05-28
2,077 reads
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Restoring On Top II
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Breaking Down Your Work
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Question of the Day
Restoring On Top II
I have a database, DNRTest, that has a number of tables and other objects in it. The other day, I was trying to mock up a test and ran this code on the same server:
-- run yesterday CREATE DATABASE DNRTest2 GO USE DNRTest2 GO CREATE TABLE NewTable (id INT) GOToday, I realize that I need a copy of DNRTest for another mockup, and I run this:
-- run today USE Master BACKUP DATABASE DNRTest TO DISK = 'dnrtest.bak' GO RESTORE DATABASE DNRTest2 FROM DISK = 'dnrtest.bak' WITH REPLACEWhat happens? See possible answers