June 2010
Intermediate to advanced
328 pages
7h 51m
English
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How to Recognize the Antipattern
The following quotes can be hints that someone in your organization is about to use the Pseudokey Neat-Freak antipattern.
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“How can I reuse an autogenerated identity value after I roll back an insert?”
Pseudokey allocation doesn’t roll back; if it did, the RDBMS would have to allocate pseudokey values within the scope of a transaction. This would cause either race conditions or blocking when multiple clients are inserting data concurrently.
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“What happened to bug_id 4?”
This is an expression of misplaced anxiety over unused numbers in the sequence of primary keys.
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“How can I query for the first unused ID?”
The reason to do this search is almost certainly to reassign the ID.
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“What if I run out of numbers?” ...
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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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.