October 2002
Beginner
864 pages
18h 41m
English
Content preview from Sams Teach Yourself SQL in 21 Days, 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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Importing and Exporting Data from Foreign Sources
The INSERT, UPDATE, and DELETE statements are extremely useful from within a database program. They are used with the SELECT statement to provide the foundation for all other database operations you will perform. However, SQL as a language does not have a way to import or export data from foreign data sources.
For example, assume that your office may have been using a dBASE application for several years that has outgrown itself. Now your manager wants to convert this application to a client/server application using the Oracle relational DBMS (RDBMS). Unfortunately for you, these dBASE files contain thousands of records that must be converted to an Oracle database. Obviously, the INSERT, UPDATE ...
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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.