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What is the function of MongoDB database? in view of this question, this article introduces the corresponding analysis and answer in detail, hoping to help more partners who want to solve this problem to find a more simple and feasible method.

What does the MongoDB database do?

MongoDB also has a Ruby project MongoMapper, which imitates Merb's DataMapper to write the MongoDB interface, which is very easy to use, almost the same as DataMapper, and very powerful.

MongoDB is a product between relational database and non-relational database, which is the most functional and most like relational database in non-relational database. The data structure he supports is very loose, which is similar to json's bjson format, so it can store more complex data types. The most important feature of Mongo is that the query language it supports is very powerful, and its syntax is somewhat similar to the object-oriented query language. It can almost achieve most of the functions similar to the single table query of relational database, and also supports the establishment of data indexing.

The so-called "Collenction-Orented-oriented" means that data is grouped and stored in a dataset, which is called a Collenction. Each collection has a unique identification name in the database and can contain an unlimited number of documents. The concept of a collection is similar to a table (table) in a relational database (RDBMS), except that it does not need to define any schema.

Schema freedom (schema-free) means that we do not need to know any structural definition of the file stored in the mongodb database. If necessary, you can store files with different structures in the same database.

A document stored in a collection is stored as a key-value pair. The key is used to uniquely identify a document that is a string type, while the value can be a complex file type. We call this form of storage BSON (BinarySerializeddOcumentFormat).

The MongoDB server can run on Linux, Windows or OSX platforms and supports 32-bit and 64-bit applications. The default port is 27017. It is recommended to run on a 64-bit platform because the maximum file size supported by MongoDB when running in 32-bit mode is 2GB.

MongoDB stores the data in a file (the default path is: / data/db) and manages it using memory-mapped files for efficiency.

It is characterized by high performance, easy to deploy, easy to use, and it is very convenient to store data. The main functional features are:

For collection storage, it is easy to store data of object type.

Mode freedom.

Dynamic query is supported.

Full indexing is supported, including internal objects.

Query is supported.

Replication and failure recovery are supported.

Use efficient binary data storage, including large objects such as video, etc.

Automatically handle fragments to support scalability at the cloud computing level.

Support for RUBY,PYTHON,JAVA,C++,PHP,C# and other languages.

The file is stored in BSON (an extension of JSON).

Can be accessed through the network.

The answers to the questions about the role of MongoDB database are shared here. I hope the above content can be of some help to you. If you still have a lot of doubts to be solved, you can follow the industry information channel to learn more about it.

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