July 2010
Intermediate to advanced
448 pages
12h 22m
English
Content preview from Physical Database Design
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220 CHAPTER 11 Query Execution Plans and Physical Design
11.8 Summary
The ability to view query execution plans and some of the associated resource and
selectivity for operators within the plan is a major tool in the process of physical data-
base design. So much so that no modern database is effectively designed today without
exploring access paths. The access path analysis can help the database designer see
where the resource hot spots are, and whether the designs attributed that they have cre-
ated in the database are being exploited. When the database design seems good, but
the query optimizer is not selecting the available design feature, some ...
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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.