mongodb find subdocument by id

MongoDB is a document-oriented database, which is currently developed and maintained by 10gen. It has rich functions and is complete and can completely replace MySQL. In the process of using MongoDB as a product prototype, we summarized some

Mongodb advanced 2: mongodb aggregation and mongodb advanced AggregationIn the previous article we talked about mongodb's advanced query: http://blog.csdn.net/stronglyh/article/details/46817789 This article introduces mongodb aggregation. I. mongodb

Part 1Original: 6 Rules of Thumb for MongoDB Schema Design:part 1By William Zola, leads Technical support Engineer at MongoDB"I have a lot of experience with SQL, but I'm a beginner in MongoDB. How do I model a one-to-many relationship in MongoDB?

In the previous article we talked about MongoDB advanced query: http://blog.csdn.net/stronglyh/article/details/46817789This article is about MongoDB aggregation.A: MongoDB has a lot of aggregation framework, so that the transformation and

The indexes in MongoDB are similar to relational databases, all in order to improve the efficiency of query and sorting, and the principle of implementation is basically consistent. Because the key (field) in the collection can be a normal data type,

The indexes in MongoDB are similar to relational databases, all in order to improve the efficiency of query and sorting, and the principle of implementation is basically consistent. Because the key (field) in the collection can be a normal data type,

ByTrishaGee, rule. Fornewusers, it 'orortanttoprovideanoverviewofhowtoworkwiththemongodbjavadriverandhow By Trisha Gee, Java Engineer and Advocate at MongoDB Java is one of the most popular programming languages in the MongoDB Community. for new

The indexes in MongoDB are similar to relational databases, all in order to improve the efficiency of query and sorting, and the principle of implementation is basically consistent. Because the key (field) in the collection can be a normal data type,

Version: mongodb3.4;Sharding:Working order: Router=>config=>shardsOne, configure config:The 3.4 config must be replset. Configure two config below.Mongod--configsvr-dbpath=.   -logpath=. replset=myconfig-port=3001--fork;Mongod--configsvr-dbpath=.

The index in http://www.cnblogs.com/lipan/archive/2011/03/28/1997202.html MongoDB is similar to relational database, it is to improve the efficiency of query and sorting, and the principle of implementation is basically consistent. Because the key