Joe Celko


Stairway to Database Design

Stairway to Database Design Level 1: Data Elements

Before you start to think about your database schema or tables, you need to consider your data: the type of data it is, the scale you use for values. It needs to be unique, precise and unambiguous. Then you need to name it in such a way that it can be generally understood. Joe Celko explains...

You rated this post out of 5. Change rating

2019-03-26 (first published: )

38,867 reads

Stairway to Database Design

Stairway to Database Design Level 2: Domains, Constraints and Defaults

A clear understanding of SQL Data Types and domains is a fundamental requirement for the Database Developer, but it is not elementary. If you select the most appropriate data type, it can sidestep a variety of errors. Furthermore, if you then define the data domains as exactly as possible via constraints, you can catch a variety of those problems that would otherwise bedevil the work of the application programmer.

You rated this post out of 5. Change rating

2019-03-26 (first published: )

27,981 reads

Blogs

T-SQL Tuesday #180: Good enough is perfect Roundup

By

This month, I prompted bloggers to discuss whether good enough is perfect. Thank you to all...

Using SQL Compare with Read-only Access

By

Recently a customer asked if SQL Compare and SQL Data Compare can be used...

Off to Live 360

By

I am off to Live 360 today, on my last trip of the year....

Read the latest Blogs

Forums

how can i tell if our db2 driver is ms or ibm or other?

By stan

i see this in the definition of a linked server on our wh sql...

normal role member to be able to view list of other role members in his DB

By Senad

Is this even possible ? Tried with grant but to no avail. [sys].[database_role_members] and...

Stairway to Snowflake Level 5 - Using Snowflake with SnowSQL and Visual Studio Code

By Mike McQuillan

Comments posted to this topic are about the item Stairway to Snowflake Level 5...

Visit the forum

Question of the Day

A Strange Result

What does this code return in SSMS 20 from SQL Server 2019?

select '|' + CHAR(0)+'abc' + '|';

See possible answers