Editor: This is for scripts. If you have a script, please include thatin the "script" box
ISDATE function returns 1 even for a numeric (for ex: 1753). The reason is valid range of years is 1753 - 9999. To overcome this we have to use STUFF function
Select isdate('1752') -- it returns 0 which is valid
Select isdate('1753') -- it returns 1 which is invalid
--WorkAround
select isdate(Stuff('1753', 4, 0, ' ')) -- returns 0 which is valid 
For most DBAs, normalization is an understood concept, a bread and butter bit of knowledge. However, it is not at all unusual to review a database design by a development group for an OLTP (OnLine Transaction Processing) environment and find that the schema chosen is anything but properly normalized. This article by Brian Kelley will give you the core knowledge to data model.
2003-01-13
18,496 reads
What's this error:Arithmetic overflow error converting IDENTITY to data type int? It was a new one to me, but read on to find out what it means.
2002-10-14
6,946 reads
This article shows you how to design the storage for email addresses, how to validate email addresses, how to retrieve demographic information from email addresses efficiently, using computed columns and indexes. It also covers the security aspect of dealing with email addresses.
2002-08-01
1,340 reads
Binary data can be stored as integers in a table. This article explains how to query an integer field to return the bits represented by the integer.
2002-06-28
4,624 reads
This article demonstrates how to store checkbox results as integers in a database...perfect for surveys!
2002-06-27
4,547 reads