October 2016
Intermediate to advanced
656 pages
13h 42m
English
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Many-to-many relationships
Another type of relationship between records is many-to-many. The relationship between siblings is many-to-many. I can have many brothers and sisters, as can they. But how can I store this information? A reference field can only point to one record.
Adding a lot of reference fields into a form is one way. I could create as many reference fields as I have siblings. However, that's not great design. What if another brother or sister were born? Making new fields every time a new baby arrives is not cool.
Instead, we could create another table that sits in between two records, acting as the "glue" that sticks them together. This many-to-many table has two reference fields, each pointing to a different side of the relationship. ...
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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.