May 2008
Beginner
504 pages
8h 34m
English
Content preview from Sams Teach Yourself SQL in 24 Hours, Fourth EditionBecome 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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Chapter 5. Manipulating Data
In this hour, you learn the part of SQL known as Data Manipulation Language (DML). DML is the part of SQL that is used to make changes to data and tables in a relational database.
This hour’s highlights include:
An overview of data manipulation language
Instruction on how to manipulate data in tables
Concepts behind table population of data
How to delete data from tables
How to change or modify data in tables
Overview of Data Manipulation
DML is the part of SQL that allows a database user to actually propagate changes among data in a relational database. With DML, the user can populate tables with new data, update existing data in tables, and delete data from tables. Simple database queries can also be performed within a DML ...
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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.