mongodb findandmodify

db.collection.update :Modifies an existing document or document in the collection. The method can modify the specific fields or documents of an existing document based on the update parameters, or completely replace the existing document.By default,

Install MongoDB 3.0 server on CentOS71. Download and install MongoDB 3.0 official version released! This marks a new development stage for MongoDB databases, providing a powerful, flexible, and easy-to-manage database management system. MongoDB

Write in frontThe recent reading of the node. JS Learning Guide does not introduce much to MongoDB, but for a front-end developer, even if you haven't used the database, you can understand and use it well.A very good introduction to the Book of node.

Previous article: Http://www.cnblogs.com/hoojo/archive/2011/06/01/2066426.html introduced to the MONGODB console to complete the data manipulation of MongoDB, We have a comprehensive understanding and understanding of MongoDB through the previous

1 first describes the process of returning the query results:When querying, MongoDB is not the one that returns all the documents for the result collection at a time, but instead returns the results of the query in batches of multiple documents,

MongoDB practice (MongoDB developer's appearance)Basic InformationOriginal Title: MongoDB in actionAuthor: Banker (K.) [Translator's introduction]Translator: Ding XuefengSeries name: Turing programming SeriesPress: People's post and

Design and Implementation of mongodb auto-incrementing primary key id Generator   Article: http://blog.csdn.net/5iasp/article/details/8794396 Author: javaboy2012Email: yanek@163.comQq: 1046011462   Scenario: assume there are two systems: System A

Http://www.cnblogs.com/hoojo/archive/2011/06/01/2066426.html introduced to the MONGODB console to complete the data operation of MongoDB, We have a comprehensive understanding and understanding of MongoDB through the previous article. Now we're

Development environment:System:windowsIde:eclipse, MyEclipse 8Database:mongodbDeveloping dependent libraries:JavaEE5, Mongo-2.5.3.jar, Junit-4.8.2.jarEmail:[email protected]Blog:http://blog.csdn.net/ibm_hoojohttp://hoojo.cnblogs.com/First, the

1. Object ID generation each mongoDB document requires a primary key. It must be unique to all documents in each set and the primary key is stored in the document _ id field. Consists of 12 characters; 4c291856238d3b19b20000014 byte timestamp