mongodb recovering

Tags: MongoDB database command NoSQLMongoDB is a NoSQL database that uses the "set-oriented" (collection-oriented) principle, meaning that data is grouped in a dataset, called a collection (Collection). Each collection (Collection) has a unique identifying name in the database and can contain an unlimited number of objects (Basicdbobject).The concept of a collection (Collection) is similar to a table in a relational database (RDBMS), the concept of an

1: Download MongoDB 2.6 versionHttps://fastdl.mongodb.org/win32/mongodb-win32-x86_64-2008plus-2.6.9.zip2: UnzipTAR-ZXVF Mongodb-linux-x86_64-2.6.9.zipMV mongodb-linux-x86_64-2.6.9 MongoDB　　3: Create data directory and log directory and conf configuration file in

MongoDB is a powerful, flexible, scalable way to store data. It expands the many useful features of relational databases, such as secondary indexes, range queries, and sorting. MongoDB is rich in functionality, such as built-in support for MapReduce aggregation, and support for geo-spatial indexing. 1.1 Rich data models MongoDB is a document-oriented database,

System environment: Operating system: Windows XP Database: mongodb2.0.6 Driver Package: Spring3.1.2 + mongodb2.7.3 + spring-data-mongodb1.0.1 Description: For XP system users, when performing Mongod.exe installation MongoDB, unable to locate the program input point InterlockedCompareExchange64 on the dynamic link library KERNEL32.dll, This is because XP is no longer supported by the newest development branch. That is, your

Tags: set technology share div MONGO code cal CHM ring count1. Increasevar mongoclient =Require"MongoDB"). Mongoclient;var Db_url ="Mongodb://localhost:27017/chm";functionInsertData(DB) {var devices = Db.collection (' VIP ');var data = { "name": "node", "age": 22, "addr": "NB", "Addtime": new date ()}; Devices.insert (Data,function ( Error, result) {if (Error) {Console.log (else{Console.log (RESULT.RESU

The MongoDB update () and Save () methods are used to update the collection of documents. The update () method updates the existing document value, replacing the existing document with the Save () method in the file.MongoDB Update () methodThe update () method updates the existing document values.Grammar:The basic syntax for the update () method is as follows>db. Collection_name. Update(selectioin_criteria, updated_data) ExampleConsider the

Tags: style blog http using SP file data onThe MongoDB here is in the Windows environmentWindows installation under:1.:http://www.mongodb.org/downloadsRecommended download stable version (stable version)2. Installation(1): Unzip to C:\mongodb (the path itself can be specified)(2): Create a storage location for the database files, such as C:\mongodb\data. Note: Yo

1. Features of MongoDB:(1) Easy to useMongoDB is a document-oriented database, a non-relational database. by embedding documents and data in a document, the object-oriented approach enables a single record to represent complex hierarchical relationships . The key and value of the document is no longer a fixed type and size.(2) Easy to expandMongoDB is designed to scale out by partitioning the data across more machines. The document-oriented data model

MongoDB Learning Note One: The download and installation of MongoDBTake advantage of these days more idle, ready to learn the MongoDB database, today simply learned some of the MongoDB download and installation, and created a storage MongoDB Data warehouse. Share what you learned today as a blog.First, the download and

Default do is need username and password authenticate when Access MongoDB, I want to set up the user name password For my MongoDB. So, any remote access would ask for the user name password. One is following: Shutdown Server and exitRestart Mongod with–auth option or using config file. TipThe username password would work the same for Mongodump and Mongoexport.[[emailprotected] bin]$ mongomo

dbpath-d [--DB] arg to specify the database -c [--collection] arg specifies the collection-o [--out] arg (=dump) specifies the output directory, "-" indicates standard output-Q [--query] arg JSON query--oplog uses Oplog to produce point-in-time snapshots--repair attempts to restore Complex crash database--forcetablescan forced table scan, do not use $snapshotCommonly used is: Mongodump-h host-u user name-p password-d database-C collection-O backup directoryUse Mongorestore to restore

PHP simple MongoDB operation method (installation, addition, deletion, modification, and query), mongodb addition and Deletion This article describes how to operate MongoDB in PHP. We will share this with you for your reference. The details are as follows: For php operations on MongoDB, first download the

Speaking of Java operations on databases, we will naturally think of Sun's well-known brand JDBC. For NoSQL databases such as MongoDB, there are currently no standards such as JDBC. This article analyzes the current situation and looks forward to www. Speaking of Java operations on databases, we will naturally think of Sun's well-known brand JDBC. For NoSQL databases such as MongoDB, there are currently no

[MongoDB] The high query operation of MongoDB (III), mongodboperation1, Sort Needless to say, mongodb also support to sort data. THe positive one means sorting by asc order and negetive means by desc. 2. Group The grammar of group: Description Of Argument: Key: The field need to group Cond: query condition Initial: initialize the counter of group Redue: generall

First experience of mongodb, mongodbMongodb initial experience A new workflow product needs to be developed after the start of the year. It is mainly used to manage the management process in the automotive industry. Because it is similar to the old product business last year, it also uses the same platform. The static data and business data on the old platform are based on hibernate and mysql. The ORM relationship is complex, so the related business c

Use nodejs mongodb to connect to mongodb's shard distribution service, nodejsmongodb 1. For more information about connecting to a single mongodb instance, see the node mongodb documentation. Https://github.com/mongodb/node-mongodb-native 2. To connect to mongodb's mo