March 2003
Beginner
672 pages
14h
English
book
Database Design for Mere Mortals™: A Hands-On Guide to Relational Database Design, Second Edition
by Michael J. Hernandez
Content preview from Database Design for Mere Mortals™: A Hands-On Guide to Relational Database Design, Second Edition
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Field-Level Integrity
A field attains field-level integrity after you've defined a complete set of field specifications for the field. Field-level integrity warrants the following:
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The identity and purpose of a field is clear, and all of the tables in which it appears are properly identified.
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Field definitions are consistent throughout the database.
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The values of a field are consistent and valid.
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The types of modifications, comparisons, and operations that can be applied to the values in the field are clearly identified.
You can guarantee that a field structure is sound and optimally designed when it has a complete set of field specifications and fully conforms to the Elements of the Ideal Field. In fact, ensuring that the field complies ...
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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.