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Guidelines for good schema design

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Guidelines for good schema design

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[...]
But even without Yii considering them, foreign-keys are a vital part of maintaining referential integrity of your database; there are many tutorials on the web on how to learn about them.

DO name your foreign key fields ending in "id"
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Related to the prior note, if a you have a field that holds the ID of a user, call the field `userid` rather than `user`. This is because for every foreign key you include in a table, you'll almost certainly wish to define a **relation** for it.

In Yii, class variables, db fields, virtual attributes, relations all share a single namespace, so it's not possible to have `$model->user` be **both** the foreign key in the table **and** the relation.

By calling the FK `userid`, the BELONGS_TO relation of `$model->user` forms naturally and easily:
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Version: 1.1
Category: Tips
Tags: database, schema design
Written by: Steve Friedl
Last updated by: softark
Created on: Aug 27, 2011
Last updated: 6 years ago
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