May 2013
Beginner to intermediate
352 pages
8h 8m
English
Content preview from Oracle Data Integrator 11g CookbookBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Using one single interface to load changes that occur in any dimensions
When data is de-normalized, data that is originally in multiple source tables often ends up in a single target table. From that perspective, changes that occur in any one of the source tables have to be reflected in the same target table.
One challenge here is that if you simply join the changes from the different source tables while loading the target table, you will only have data to load if all tables have changes: that is, if we simply join the changes from SRC_EMP to the changes from SRC_DEPT, we will only have target data to process when changes occur simultaneously in both tables. If one of the sets is empty, then we will have nothing to process.
For this reason, ODI ...
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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.