mongodb date comparison

The advantages of MongoDB compared to relational databases:① Weak consistency (eventually consistent), to ensure the user's access speed:For example, in a traditional relational database, a count type of operation locks the dataset so that the exact

What is NoSQLLearn about MongoDBDownload and installation of MONGDBThe architecture of MongoDBCommon commands (basic additions and deletions)Client GUI Tools CollectionOne: What is NoSQL1 Introduction to NoSQLNoSQL is not the only SQL abbreviation,

Recently, with the advent of the "Big Data Age", NoSQL database as an Up-and-comer in the database industry, in a short span of a few years, has been rapid development, and today is also a great substitute for the RDBMS. Among the many NoSQL

When it comes to MongoDB's architecture, it is inevitable to compare it with relational databases. Here we take MySQL for example, we make some comparisons:From the logical structure of the comparison: MySQL Hierarchy concept

MongoDB basic operation learning notes Record the basic operations of MongoDB today. This is only the most basic operation, so it should be mastered. Database A database is a collection of physical containers. Each database has its own file system.

I. Index 1, index operation 1.1 inserting data> use testdbswitched to db testdb> for (i=1;i db.students.find().count()100001.2 Creating an Index在name字段构建升序索引：> db.students.ensureIndex({name: 1}){ "createdCollectionAutomatically" : false,

Introduction to MongoDB and addition, deletion, modification, and query I. Introduction MongoDB is written in C ++ and is an open source database system based on distributed file storage. MongoDB is designed to provide scalable, high-performance

compared to relational database, the advantages of MongoDB: reprinted from Http://blog.sina.com.cn/s/blog_966e430001019s8v.html① Weak consistency (eventually consistent), to ensure the user's access speed:For example, in a traditional relational

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Some basics forget to check at any time.#整备恢复Mongodump--port 20001--authenticationdatabase=admin-u *-D lvlv-c lvlv-o/homeMongorestore--drop--host 172.16.201.74--port 20001--authenticationdatabase=admin-umgbackup-d test/tmp/liding/test