Additional Articles


External Article

State Transition Constraints

About two decades ago, I introduced the concept of transition constraints to show Data Validation in a database is a lot more complex than seeing if a string parameter really is an integer. In October of 2008, I did an article called Constraint Yourself! on how to use DDL constraints to assure data integrity. One of the topics in that piece was a look at state transition constraints via an auxiliary table.

2025-07-07

External Article

Data Encoding Schemes

Your choice of how you encode data can be significant. With computers and databases, you have a wide range of options. As a programmer, you will likely be called upon at some time in your career to design and coding scheme for particular application. It would really help if you at least avoided designing a bad one.

2025-06-30

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DML Trigger Types

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Question of the Day

DML Trigger Types

How many types of DML triggers are there?

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