MongoDB：如何在论文中表示模式图？
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MongoDB: How to represent a schema diagram in a thesis?
提问by Andrew
I am currently writing a thesis and need to display the schema of my MongoDB in a diagram. I have found no resources about diagrams for document-based databases.
我目前正在写论文，需要在图表中显示我的 MongoDB 的架构。我没有找到有关基于文档的数据库的图表的资源。
There are Entity Relationship Diagrams (ERD) for relational databases. What options do I have for MongoDB? I've noticed that a lot of blogs just display the raw JSON as their "diagram" but this isn't feasible in my thesis.
关系数据库有实体关系图 (ERD)。对于 MongoDB，我有哪些选择？我注意到很多博客只是将原始 JSON 显示为他们的“图表”，但这在我的论文中是不可行的。
Here is a sample of one of my JSON structures:
这是我的 JSON 结构之一的示例：
//MultiChoiceQuestion
{
"title": "How are you?",
"valid_answers" : [
{
"_id" : ObjectID(xxxx),
"title": "Great",
"isCorrect": true,
},
{
"_id" : ObjectID(yyyy),
"title": "OK",
"isCorrect": false,
},
{
"_id" : ObjectID(zzzz),
"title": "Bad",
"isCorrect": false,
}
],
"user_responses" : [
{
"user": ObjectID(aaaa),
"answer": ObjectID(xxxx)
},
{
"user": ObjectID(bbbb),
"answer": ObjectID(xxxx)
},
{
"user": ObjectID(cccc),
"answer": ObjectID(yyyy)
}
]
}
//User
{
"_id": ObjectID(aaaa),
"name": "Person A"
}
//User
{
"_id": ObjectID(bbbb),
"name": "Person B"
}
//User
{
"_id": ObjectID(cccc),
"name": "Person C"
}
Could this be a possible diagram:
这可能是一个可能的图表：
采纳答案by Prasith Govin
We found class diagrams to actually be one of the best ways to represent a mongo schema design.
我们发现类图实际上是表示 mongo 模式设计的最佳方式之一。
It can capture most of the items that a document will have such as arrays, embedded objects and even references.
它可以捕获文档将具有的大多数项目，例如数组、嵌入对象甚至引用。
General guidelines we use to relate onto concepts to uml
我们用来将概念与 uml 相关联的一般准则
Embed= Composition aggregation
嵌入= 组合聚合
Reference= Association class
参考= 关联类
If you're unfamiliar with the uml terminology then this is a decent intro.
如果您不熟悉 uml 术语，那么这是一个不错的介绍。
回答by dprutean
There is a tool doing diagrams for MongoDb, is called DbSchema. It discovers the schema by scanning data from db. I would also suggest trying two features from them :
有一个为 MongoDb 绘制图表的工具，称为DbSchema。它通过扫描 db 中的数据来发现模式。我还建议尝试他们的两个功能：
- virtual relations which allow exploring data from different collections in the same time. A kind of JOIN between different collections.
- HTML documentation, we use it in presentations as well - the comments are in mouse-over ( diarams are saved as vector images ).
- 允许同时探索来自不同集合的数据的虚拟关系。不同集合之间的一种 JOIN。
- HTML 文档，我们也在演示文稿中使用它 - 评论在鼠标悬停（diarams 保存为矢量图像）。
