mongodb select field

Original link http://www.cnblogs.com/zhangzili/p/4975080.htmlMongoDB knowledge points at a glance1. Start the MongoDB database:Go to the MongoDB installation directory and execute the following commandC:\Program

Hubbledotnet starting from 1.2.3 version in the official code to support and MongoDB docking, MongoDB is a 10gen company developed No-sql database, its read and write performance than traditional relational database is much faster, and can be very

official website http://www.mongodb.org1, download Mongodb-win32-i386-latest.zip decompressionMongoDB 3.1.5 requires win7 to download and install memory patches HTTPS://SUPPORT.MICROSOFT.COM/ZH-CN/HOTFIX/KBHOTFIX?KBNUM=2731284KBLN=ZH-CN2, extract to

This article mainly introduces the PHP operation MongoDB implementation of adding and removing functions, combined with examples of the form of a summary of the PHP operation MongoDB Common skills, and with PHP7 operation MongoDB method, with a

First, the index introductionIn MongoDB, indexes are used to support efficient queries. If there is no index, MONGODB must scan each document in the entire collection to find a matching document. However, if an appropriate index is established,

1. What is MongoDB?It is a NoSQL database between relational database and non-relational database, written in C + +, is a high-performance document-oriented universal database which integrates agility, scalability and extensibility.2. Why use

This article mainly introduces the PHP operation MongoDB implementation of adding and removing functions, combined with examples of the form of a summary of the PHP operation MongoDB Common skills, and with PHP7 operation MongoDB method, with a

Production Environment Best Practices1. Linux:1] disable the atime option of the file system/partitionVI/etc/fstabAdd noatime and nodiratime after the corresponding partition itemLabel =/1/ext3 defaults 1 1Label =/data1/Data ext4 defaults, noatime,

MongoDB initial guide If the technology is just as early as the first time, will it still be difficult? MongoDB has been introduced in the system for several years. At the beginning, it was because a single table of MySQL records grew too fast

MongoDB, as the first database in NoSQL, has been using more and more people in recent years, and as a developer, it is necessary to understand the next MongoDB database. The following will give you the basic knowledge of the MongoDB database, there