June 2010
Intermediate to advanced
328 pages
7h 51m
English
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Objective: Simplify Database Architecture
Relational database design is almost as much about relationships between tables as it is about the individual tables themselves. Referential integrity is an important part of proper database design and operation. When you declare a foreign key constraint for a column or set of columns, the values in these columns must exist in the primary key or unique key columns of the parent table. This seems simple enough.
However, some software developers recommend avoiding referential integrity constraints. The reasons you might hear to ignore foreign keys include the following:
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Your data updates can conflict with the constraints.
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You’re using a database design that’s so flexible it can’t support referential ...
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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.