December 2017
Beginner to intermediate
500 pages
12h 10m
English
book
Learning Pentaho Data Integration 8 CE - Third Edition
by Dan Keeley, Diethard Steiner, María Carina Roldán, Miguel Gaspar, Pablo Castagnaro, Paula Clemente, Paulo Alexandre de Oliveira Rodrigues Pires
Content preview from Learning Pentaho Data Integration 8 CE - Third Edition
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Validating data with PDI
Validating data is about ensuring that incoming data contains expected values. There are several kinds of constraints that we may need to impose on our data. The following are just some examples:
- A field must contain only digits
- A date field must be formatted as MM-dd-yyyyy
- A field must be either YES or NO
- The value of a field must exist in a reference table
If a field doesn't respect theses rules or constraints, we have to proceed somehow. Some options are as follows:
- Reporting the error to the log
- Inserting the inconsistency into a dedicated table
- Writing the line with the error in a file for further revision
- Discarding just the row of data containing the error
The following section shows a simple example that ...
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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.