2009-04-01
5,181 reads
humor
The Concept of Cardinal Reciprocity- A Primer
Too many authors in the field of relational theory have neglected the concept of Cardinal Reciprocity. This can cause a number of subtle problems with database design in terms of its derivability, redundancy, and consistency. . Increasingly, this little-understood aspect of relational theory, that emphasises the cardinality of the attributes of tuples in a relation and the reciprocity with isomorphic foreign key restraints, is becoming a hot forum topic.
2009-04-01
2,846 reads
2008-12-25
4,624 reads
2008-12-25
3,341 reads
2008-12-24
183 reads
2008-12-24
179 reads
2008-12-24
428 reads
2008-10-31
4,727 reads
A Halloween Tale
A while back, in a Simple-Talk editorial meeting, someone bet Phil that he couldn't come up with a Halloween story. To our surprise he said he could, as long as he didn't have to keep to the strict literal truth.
2008-10-31
3,002 reads
2008-07-11
4,911 reads
Blogs
How to find free space in Azure PosgreSQL
I wanted to figure out how big (or approximately how big) my dump file...
T-SQL Tuesday #180: Good enough is perfect Roundup
This month, I prompted bloggers to discuss whether good enough is perfect. Thank you to all...
Using SQL Compare with Read-only Access
By Steve Jones
Recently a customer asked if SQL Compare and SQL Data Compare can be used...
Forums
Compare rows within the same table
I have a table. Structure in script below. I have to compare and see...
Microsoft Recommendations for Update Stats?
I have an application team that is insisting on daily (and for some, weekly)...
how can i tell if our db2 driver is ms or ibm or other?
i see this in the definition of a linked server on our wh sql...
Question of the Day
A Strange Result
What does this code return in SSMS 20 from SQL Server 2019?
select '|' + CHAR(0)+'abc' + '|';See possible answers