Additional Articles


External Article

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

External Article

Using Operations Manager Reports to Validate Your Uptime

Operations Manager has stacks of reports to help you monitor your applications' uptime, but reporting can be difficult until you understand all the different options, parameters, and the structure of the Operations Manager health model. Firstly, you need a clear idea about the way that your organization defines 'uptime', and only then you can start your reports. Thomas LaRock explains...

2009-03-27

1,755 reads

External Article

Gail Shaw: Geek of the Week

Gail Shaw, the fabled 'gilamonster', earned her MVP and the gratitude of a host of SQL Server professionals seeking technical help with her expert forum posts on SQLServerCentral. She brings great enthusiasm to everything she does, and has a huge influence on the communities she joins.

2009-03-25

2,216 reads

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Question of the Day

Multiple Values Inserted

I have this code on SQL Server 2022. What happens when it runs all at once?

DROP TABLE IF EXISTS dbo.Commission
GO
CREATE TABLE dbo.Commission
(id INT NOT NULL IDENTITY(1,1) CONSTRAINT CommissionPK PRIMARY KEY
, salesperson VARCHAR(20)
, commission VARCHAR(20)
)
GO
INSERT dbo.Commission
( salesperson, commission)
VALUES
( 'Brian', 12 ),
( 'Brian', 'None' )
GO
 

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