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Using Views to Enforce Business Rules

  • Article

A view is most commonly thought of as a SELECT statement. Most developers will simply create a view to "group" complex SELECT statements for reuse within another view or stored procedures. It makes typing easier! But the really power of views is their ability to implement business rules.

2007-04-23

4,528 reads

Sic Semper NULL

  • Article

The great debate over NULLs will probably never end. Should we use them in our databases? What meaning do they have? These are all
valid questions. In this article SQL Server expert Michael Coles takes a look at the problems that are inherent in eliminating NULLs completely from
a database.

5 (2)

2007-04-10

5,902 reads

Database Design: A Point in Time Architecture

  • Article

In most relational database implementations. Update and Delete commands destroy the data that was there prior to their issue. However, some systems require that no information is ever physically deleted from or updated in the database. In this article, Arthur Fuller presents a solution to this requirement in the form of a Point-in-Time architecture: a database design which allows a user to recreate an image of the database as it existed at any previous point in time, without destroying the current image.

2007-02-28

3,723 reads

Refactoring Databases: The Process

  • Article

This article describes how to implement a single refactoring within your database. It contains a worked example of the Move Column structural refactoring, whereby we move the Customer.Balance column to the Account table, a seemingly straightforward change to improve the database design.

2007-01-16

3,244 reads

Table Defaults

  • Article

In working on an existing database, DBAs often look to normalize tables and correct obvious flaws in design. Recently Andy Warren was working on a consulting project and realized that defaults would prevent many issues.

4.4 (5)

2007-12-28 (first published: )

7,173 reads

Design Challenge: Global Address

  • Article

Are you up to the latest design challenge? A great way to sharpen our analysis and modeling skills is to continuously address real-world scenarios. A modeling scenario with suggested solutions appears each month in this Design Challenge column. The scenario is emailed to more than 1,000 modelers. The responses are then consolidated into this column.

2006-10-16

2,039 reads

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