July 2006
Intermediate to advanced
560 pages
12h 57m
English
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Logical vs. Physical Storage Structures
Data independence is a primary characteristic of a relational database system such as Oracle. An Oracle database's physical structure is independent of and hidden from an end user's logical view of the data. The benefit of data independence is that typical end users and application developers can easily access data in logical structures such as tables by using simple SQL commands, without having to consider the complexities of the data's physical storage. For example, when you execute a query that targets a table, you don't have to consider where the table's data is stored on disk, because Oracle transparently maps columns and rows of the table's data to files and physical bytes on disk. And after a database ...
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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.