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Author: Craig Mullins
This blog post discusses costs vs. advantages of converting an existing application from IMS DB to DB2.
Lock avoidance is a mechanism employed by DB2 for z/OS to access data without locking while maintaining data integrity. Avoiding locks can improve performance.
There are many types of DBAs and varying job descriptions. Which ones are the most common? Find out here.
There are many ways to go about structuring your DBA staff. Is it better to hire DBAs with broad skills or more specialized skills? This blog post has some direction.
The DB2 DISPLAY command is a powerful tool that gathers details about your DB2 subsystems and databases. DBAs should know how to use DISPLAY to simplify their job.
A reminder about the VOLATILE keyword. It was added in DB2 Version 8 and can be specified on a table using CREATE TABLE and/or ALTER TABLE statements
Both DB2 for z/OS and DB2 for LUW support the INTERSECT and EXCEPT operations in SQL SELECT statements. They both are similar to UNION in the way in which they work and are coded. But there a differences.
Sometimes an application can require different, perhaps even somewhat "odd" data sorting. Often you can conjure up an answer by properly understanding the problem and applying some creative SQL.
Not everybody knows what a DBA does. This 2-part post goes over DBA job responsibilities so you can see the depth and breadth of their day-to-day tasks.