humor

External Article

The Concept of Cardinal Reciprocity- A Primer

  • Article

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

Blogs

How to find free space in Azure PosgreSQL

By

I wanted to figure out how big (or approximately how big) my dump file...

T-SQL Tuesday #180: Good enough is perfect Roundup

By

This month, I prompted bloggers to discuss whether good enough is perfect. Thank you to all...

Using SQL Compare with Read-only Access

By

Recently a customer asked if SQL Compare and SQL Data Compare can be used...

Read the latest Blogs

Forums

Announcing SQL Server 2025

By Steve Jones - SSC Editor

Comments posted to this topic are about the item Announcing SQL Server 2025

Running Steve's Code

By Steve Jones - SSC Editor

Comments posted to this topic are about the item Running Steve's Code

New SQL Server 2022 Functions

By Steve Jones - SSC Editor

Comments posted to this topic are about the item New SQL Server 2022 Functions

Visit the forum

Question of the Day

Running Steve's Code

Can you run this code in any of your SQL Server 2019 databases without error? 

CREATE OR ALTER PROCEDURE [dbo].[StevesAmazingProc]
AS
    
        SELECT Consumer_ID ,
               Trend_Category ,
               Bit_Trace
        FROM    NewWorldDB.dbo.MarketTrend;
    
GO

See possible answers