May 2009
Beginner
840 pages
16h 18m
English
book
Sams Teach Yourself SQL in One Hour a Day, Fifth Edition
by Ryan Stephens, Ron Plew, Arie D. Jones
Content preview from Sams Teach Yourself SQL in One Hour a Day, Fifth Edition
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LESSON 18Exploring the Data Dictionary (System Catalog)
In this lesson, we discuss the data dictionary, also known as the system catalog. By the end of this lesson, you should have a solid understanding of the following:
• The definition of the data dictionary
• The type of information the data dictionary contains
• Different types of tables within the data dictionary
• Effective ways to retrieve useful information from the data dictionary
An Introduction to the Data Dictionary
Every relational database has some form of data dictionary, or system catalog. (We use both terms in this lesson’s presentation.) A data dictionary is a system area within a database environment that contains information about the ingredients of a database. Data dictionaries ...
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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.
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.