需要有关数据库表关系的帮助 [英] Need Help About Database Tables relation

问题描述

我创建了大约3个应用程序广告，现在正在创建4个应用程序，我遇到一些人告诉我使用表关系将帮助你很多他给我一些信息但我需要知道它是如何工作现在我创建一个医生管理应用程序如果我输入了一个患者姓名，并为该患者预约了如何使用

i created about 3 application ad now creating the 4 app and i meet some someone who tell me use tables relation will help you alot he give me some information but i need to know how it work now iam creating a doctor management app if i had enter a patient name and go a and make a Reservation for this patient how it will work

推荐答案

请参阅我今天的所有评论到你的帖子。有了这样的问题，你无处可去。不过，让我指出你的方向。您在询问关系模型和数据库的基础知识。这些文章应该让您了解您需要学习的内容并提供一些介绍：

https：// en.wikipedia.org/wiki/Relational_database [ ^ ]，

https://en.wikipedia.org/wiki/Relational_model [ ^ ]，

https://en.wikipedia.org/wiki/Unique_key [ ^ ]，

https： //en.wikipedia.org/wiki/Foreign_key [ ^ ]，

https://en.wikipedia.org/wiki/Database_schema [ ^ ]，

https://en.wikipedia.org/wiki/Database_normalization [ ^ ]（更高级，但必不可少），

https://en.wikipedia.org/wiki/Category:Data_modeling [ ^ ]。



但主要问题不是所有这些主题。你需要培养学习东西的技能。提出问题只是其中的一部分。你表现出太多无助的弱点。当然可以学习，但教学很难。无论如何，这个快速问题&答案论坛不适合获取相关说明。你可以通过学习一些东西（而不是广泛地），通过学习练习和使用你的大脑来学习如何学习东西。

Please see all my today's comments to your posts. With such questions, you go nowhere. Nevertheless, let me point you in some direction. You are asking about the very basics of relational model and databases. These articles should give you an idea on what you need to learn and provide some introduction:
https://en.wikipedia.org/wiki/Relational_database[^],
https://en.wikipedia.org/wiki/Relational_model[^],
https://en.wikipedia.org/wiki/Unique_key[^],
https://en.wikipedia.org/wiki/Foreign_key[^],
https://en.wikipedia.org/wiki/Database_schema[^],
https://en.wikipedia.org/wiki/Database_normalization[^] (more advanced, but essential),
https://en.wikipedia.org/wiki/Category:Data_modeling[^].

But the major problem is not all these topics. You need to develop the skills of learning thing. Asking questions is just a part of it. You demonstrate too much of helpless weakness. It can be learned of course, but it's hard to teach. Anyway, this Quick Questions & Answers forum is not a suitable place for getting instructions on that. You can learn how to learn things only by learning something intensively (as opposed to "extensively"), by learning practice, and by using your brain.

记住东方谚语：

说halva-halva不会让你的嘴巴变甜。

Saying "halva-halva" won't make your mouth sweet.

-SA

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