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Welcome to Datavail's Blog, where you can read the latest insights, tips and opinions of our experts on all things data and technology.

Category: Db2

Data Types: The Importance of Choosing the Correct Data Type

Most DBAs have struggled with the pros and cons of choosing one data type over another. This blog post discusses different situations.

Craig Mullins | October 11, 2017
DB2, ISOLATION

Db2 Isolation Levels: Know Your ISOLATION Levels

It is important for DB2 DBAs and application programmers to know the four isolation levels and their impact on SQL in order to control concurrency and locking.

Craig Mullins | August 30, 2017

Using INTERSECT and EXCEPT in DB2

They both are similar to UNION in the way in which they work and are coded. But there a differences, this blog explores the differences.

Craig Mullins | February 9, 2017

Using Nulls in DB2

Nulls are clearly one of the most misunderstood features of DB2. Here are some examples, tips & guidelines from Craig Mullins to demystify the use of nulls.

Craig Mullins | April 6, 2015