mongodb findandmodify example

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

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

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

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

Php implements the Mongodb custom method to generate the auto-increment ID. This article describes how to generate a user-defined ID for Mongodb in php, the example analyzes the Mongodb auto-increment field implementation technology. php implements

Insert and save a documentInsert a document using the Insert method for the target set:> Db.foo.insert ({"Bar": "Baz"})This will add a "_id" key to the document (if it is not) and then save it to MongoDB.BULK INSERTIf you are inserting multiple

The example of this article describes the implementation method of MongoDB ID. Share to everyone for your reference, specific as follows: First create an automatic growth ID collection IDs >db.ids.save ({name: "User", id:0}); You can

The use of the MONGDB database is not a crud operation. What is crud, is creating documents, reading document information, updating documents, and deleting documents. Key-value Key-value pair tags In MongoDB's Ruby driver, the

The recent transformation of two applications, a series of problems in the online process (part of which is due to objectid misunderstanding) first to understand the following objectid: TimeStampThe first 4 bits is a UNIX timestamp, is an int