May 2001
Intermediate to advanced
1088 pages
30h 13m
English
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Relationships
Although tables are certainly the primary component of a relational database, it's the relationships between the tables that make the database so powerful. After all, if you couldn't establish relationships between tables, the database would be nothing but a simplified spreadsheet program. As it is, however, you can create relationships between tables by relating groups of keys together. There are three types of database relationships: one-to-one, one-to-many, and many-to-many.
The term relationship can refer to a relationship that the database knows about, or it can refer to a conceptual relationship that you might know about but the database does not. When you tell the database about a relationship, it automatically enforces ...
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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.