Joe Celko tackles the most difficult of all the types of data handled by SQL, temporal data, and explains how to avoid the commonest traps for the unwary programmer
2020-07-08 (first published: 2011-06-15)
10,722 reads
Having covered the procedure headers in SQL Server in the previous level, Joe tackles the subject of the contents of stored procedures. In this level, he outlines limitations of TSQL as a procedural language, and what you need to bear in mind when deciding how to use them.
2019-04-03 (first published: 2011-09-21)
12,726 reads
A great deal of the confusion that occurs when a database application is developed comes from a poor understanding of the basics of data. Here, Joe Celko gives a broad coverage of the difficulties you're likely to meet when handling data in databases.
2019-02-06 (first published: 2011-05-12)
19,311 reads
In the final step of Database Design, Joe Celko gives a simple but effective explanation of the normalization process and why it is important.
2018-02-21 (first published: 2011-11-11)
13,526 reads
In levels one to four, we built the tables, base and virtual, of a schema. Levels five and six dealt with stored procedures. This level deals with a feature you need to avoid as much as possible; this is article is on Triggers.
2018-01-24 (first published: 2011-09-30)
11,287 reads
Joe Celko tackles the subject of the Stored Procedure and its place in database design. What he writes is food for thought, even for experienced database developers.
2017-10-25 (first published: 2010-08-25)
14,854 reads
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.
2016-06-01 (first published: 2010-05-04)
26,791 reads
Having described tables, Joe Celko explains how to make them work together as a database and touches on what Entity Relationships and Views are.
2013-10-16 (first published: 2010-08-18)
18,190 reads
There are several types of tables, each with their special requirements for rules and integrity constraints. Whatever the requirement, table-level constraints will ensure that the rules are enforced and data integrity is maintained.
2013-09-18 (first published: 2010-05-25)
20,569 reads
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...
2013-07-03 (first published: 2010-04-27)
36,948 reads
By Steve Jones
I started to add a daily coping tip to the SQLServerCentral newsletter and to...
By kleegeek
Join me, David Klee, Microsoft Data Platform MVP and VMware vExpert, for a preview...
Tencent Security has released a report (written in Chinese) describing a new malware attack by...
Following with a user complain about SQL timeout I bumped into one issue with...
Ask SSC