neo4j - 我如何建模节点模式少？ [英] neo4j - how do I model node schema less?

问题描述

我读了一些noe4j或其他nosql数据库是无模式的。所以什么是模式？我想更多地了解它与用例。

I read some where that noe4j or other nosql database is schemaless. so what is the schemaless? I would like to know more about it with use case.

推荐答案

您不需要定义一个模式，在mysq与表。相反，您可以根据需要向每个节点（条目）添加属性及其值。

You don't need to define a schema like you would have to do e.g. in mysq with a table. Instead, you can add properties and their value to each individual node (entry), as you like.

例如：如果你在安卓手机上查看通讯录，一个人的条目可以有很多属性 - 电话号码，地址，名字。有些人有很多属性，有些没有。

E.g: if you look at the address book in an android phone a person entry can have a multitude of properties - phone numbers, addresses, names. Some people have a lot of attributes, some have none.

使用模式（例如表结构）做类似的操作真的很难，需要提前规划字段是什么，以及如何在未来。

Doing something like that with a schema (e.g. table structure) is really hard, and requires advance planning of what your fields are, and how you want to query them in the future.

没有模式，你可以或多或少地玩，并根据需要添加。

Without a schema you can more or less play it by ear, and add things as needed.

什么需要决定是什么作为属性添加到节点，以及作为相关节点。例如。是地址的一个节点，还是一个人的财产？ （很可能是一个独立的节点，但它取决于你的用例）

What needs deciding though is what to add as property to a node, and what as a related node. E.g. is an address a node, or just a property of a person? (Most likely a seperate node, but it depends on your use case)

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