如何理解文档型数据库（如：MongoDB）文档型三个字的意思

Question

如何理解文档型数据库（如：MongoDB）文档型三个字的意思

Answer 1

Document type means that the data we store is a collection of key-value pairs, the key is a string, and the value can be any type in the data type collection, including arrays and documents. We call this data format "[BSON] "That is, "Binary Serialized dOcument Notation."
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Answer 2

It means you can store formatted data like json. .
Each document is a column of data in a relational database
Newbies understand

Answer 3

Each piece of data in a document database is like an independent document. For example, for an article web page, its articles and its comments are stored together in a json document and are an independent entity.

It will be very convenient to read data from the background to the front desk. You can directly read a json from the database to the front desk, and the front desk can display it directly. In this way, there is no need to slow down the correlation like a relational database.

Answer 4

If json is used to describe it, it can be understood as an object. It's just like the objects stored in your program, but the location is different.

Answer 5

I think document, that is, document, can be understood as equivalent to the row of a relational database, and collection is equivalent to the table of a relational database.

Answer 6

Is it a file system similar to the file id corresponding to the file?