[MongoDB] The description of procedure in MongoDB, mongodbdescription

[MongoDB] The description of procedure in MongoDB, mongodbdescription

In this blog the procedure of mongodb will be described in details. it is known that mongodb has provided a series of efficient solution to some different questions, such as high performance, changeable type and so on. compared with the mysql database, the mongodb also support the procedure process. the first thing that you shoshould know about procedure is the language, javascript. in the next time, I will set an example to describe this question:

In the above example, the command 'db. eval () 'must be attached importance because of its strange feature. we cocould write the logic into this method and meanwhile call it without declaring the procedure process before calling.

In the above exmple, one question shoshould be cared about. When you use procedure process, you shoshould define the procedure in the database where you want to use procedure;

The company is preparing to use the mongodb database. I have checked a lot of information about mongodb usage problems and the mongodb cost problems.

Mongodb is free of charge

Weakness in the description of positive characters is () to all critical realists

C. Common

Insufficient description of positive personality is a common weakness of all realism critics.