August 2016
Intermediate to advanced
512 pages
21h 2m
English
book
Real World SQL and PL/SQL: Advice from the Experts
by Arup Nanda, Brendan Tierney, Heli Helskyaho, Martin Widlake, Alex Nuitjen
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CHAPTER3
Handling Advanced and Complex Data Sets
A data set is a collection of data. In a relational database, the data is saved in columns of the required data type. A column always belongs to one table. In an object-relational solution, the data is saved in an object. A data set can be saved data, inside or outside the database; it can be a data set used while performing a query; or it can be a query result of some form. Sometimes you need to make a decision how to save the data, sometimes getting the result might be complicated, and sometimes you need ways to handle the result set. The problem may arise because the data is big, because advanced ...
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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.