Referential Ingegrity is a critical part of any well designed RDBMS application, not just a part of Oracle, DB2, or some other platform. SQL Server has tools to make it easy, but a developer has to take the time to ensure that it is setup correctly, and ignorance is no excuse. New author Nick Duckstein brings us a look at basic RI and how you can set this up in your database.
2005-01-17
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I have this table in SQL Server 2022:
CREATE TABLE CustomerLarge (CustomerID INT NOT NULL IDENTITY(1, 1) CONSTRAINT CustomerLargePK PRIMARY KEY CLUSTERED , CustomerName VARCHAR(20) , CustomerContactFirstName VARCHAR(40) , CustomerContactLastName VARCHAR(40) , Address VARCHAR(20) , Address2 VARCHAR(20) , City VARCHAR(20) , CountryCode CHAR(3) , Postal VARCHAR(20) ) GOIf I check the columns_updated() function return in a trigger, what is the data returned? See possible answers