Database Design

Technical Article

Relational Databases 101

  • Article

In this sample chapter, William R. Vaughn gives you a kick-start on designing relational databases that can perform better, be easier to maintain, and be more successful thanks to a combination of formal rules and informal suggestions to normalize your database.

2007-12-10

3,397 reads

Technical Article

Too Simple, Too Soon

  • Article

The author explains an application development approach advocated by many proponents of agile application development that can cause future problems for developers, while potentially sacrificing the integrity and reusability of the data.

2007-11-28

3,689 reads

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Question of the Day

BIT_COUNT II

In SQL Server 2025, I have a table (dbo.UserPermission) that contains this data:

UserID  UserPermissions
15
23
37
4       NULL
What is returned when I run this code:
select bit_count(UserPermissions) as PermissionCount
from dbo.UserPermission
where UserID = 4;

See possible answers