January 2005
Beginner to intermediate
928 pages
22h 14m
English
book
Understanding DB2®: Learning Visually with Examples
by Raul F. Chong, Clara Liu, Sylvia F. Qi, Dwaine R. Snow
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13.14. Summary
In this chapter you have learned the concepts of unit of work, (UOW), logging methods, and different recovery strategies.
A unit of work (UOW) is composed of one or more statements and completed by a COMMIT or ROLLBACK. If the UOW is interrupted in the middle, all statements executed up to that point will be rolled back. This ensures data integrity.
When a database is connected for the first time, DB2 allocates a number of primary logs, based on the setting in the LOGPRIMARY database configuration parameter. When there are not enough primary logs, DB2 allocates secondary logs, one at a time. When the maximum number of secondary logs is reached, specified by the LOGSECOND database parameter, DB2 encounters a log full condition. ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.