When discussing the normalisation process, it is always the First Normal Form that causes the most grief and confusion. Anith Sen takes up the challenge to explain, in simple terms, exactly what the First Normal Form really is, and why it is so important for Database Design. Along the way, he dispels some of the myths that have grown up around 1NF.
2009-06-09
5,827 reads
When moving data in related tables between databases, the order sometimes matters. New author Glen Cooper brings us an article that discusses the issues in maintaining referential integrity.
2009-03-20
6,298 reads
2009-03-13
2,159 reads
Adding a field to a database table is sometimes not as simple as it may seem. If certain situations are not considered when adding fields, you may find yourself looking at some long nights fixing database code. Today, database consultant Tim Chapman looks at two such scenarios, and how you can plan for their occurrence.
2009-03-04
4,537 reads
Maintaining a database often means schema changes. Before you change or delete anything, be sure to check for dependent objects.
2008-12-11
2,638 reads
In his first article for Simple-Talk, Joe Celko demystifies the use of Constraints, and points out that they are an intrinsic part of SQL and are a great way of ensuring that a business rule is done one way, one place, one time.
2008-10-30
2,846 reads
Inspired by what he recently found in some SQL Server shops, database architect Brian Walker shares advice for improved database design – and SQL Server performance.
2008-10-08
5,952 reads
Inspired by what he recently found in some SQL Server shops, database architect Brian Walker shares advice for improved database design – and SQL Server performance.
2008-09-26
5,999 reads
This paper presents an approach to the definition of function points within database-centric business information systems, the process of counting function points, .
2008-08-12
1,757 reads
Using the W3C OWL ontology standard lets you get more out of all kinds of data. Find out how this standard and some free software lets you query two databases as if they were one.
2008-08-06
2,110 reads
A while back I wrote a quick post on setting up key mappings in...
By Steve Jones
In 100 years a lot of what we take to be true now will...
At Saturday the 21st of February I’m presenting an introduction to dimensional modelling at...
Hello, I inherited a number of tables with like 20-30 column using nvarchar(256) in...
Hi, i'm running vs2022. I'm trying out a c# script that i'd like to...
I upgraded a SQL Server 2019 instance to SQL Server 2025. I wanted to test the fuzzy string search functions. I run this code:
SELECT JARO_WINKLER_DISTANCE('tim', 'tom')
I get this error message:Msg 195, Level 15, State 10, Line 1 'JARO_WINKLER_DISTANCE' is not a recognized built-in function name.What is wrong? See possible answers