what is mongo database

Mysql, sqlsever, oracle, redis, mongo, postgres and other database backup and recovery commands, sqlseverredis The following is a simple example of how to back up and restore each database. For more detailed parameters and configurations, refer to relevant information. I. mysql: Parameter description: $ User

IMMEDIATE; RESTORE DATABASE $dbname from disk= ' $filename ' with replace,norecovery; RESTORE DATABASE $dbname from dist= ' $diff _filename ' with RECOVERY; ALTER DATABASE $dbname SET ONLINE " Third, Oracle: Oracle's backup and recovery primarily uses Rman, which is interesting to know more about the specific use of

1, download mongodb-win32-x86_64-2.2.1 to any one of the letter or any directory 2. Create a new batch file, which is mainly used to install MongoDB server into service: The code is as follows Copy Code d:/"program Files"/mongodb-win32-x86_64-2.2.1/bin/mongod-dbpath "D:/mongo_db_server"--logpath "D:/mongo_db_server /log/log.txt "--port 27017--install Note that the pro

1. Download mongodb-win32-x86_64-2.2.1 to any drive letter or any directory 2. Create a new batch file to install the MongoDB server to the service: D :\ " Program Files " \ Mongodb-win32-x86_64- 2.2 . 1 \ Bin \ mongod-dbpath " D: \ mongo_db_server " -- Logpath " D: \ mongo_db_server \ log \ log.txt " -- Port 27017 -- Install Note: during batch processingUse "" For program files because there are spaces in the path. 1.D: \ mongo_db_serverIs automatically generated, and

Tags: des http java uses OS IO data forConceptA Mongod service can have multiple databases, each database can have multiple tables, where the table is called collection, each collection can hold multiple documents (document), each document is Bson (binary JSON) in the form of a hard disk, so you can store more complex data types. It

About Windows platform Building MONGO database replication Set this topic, I have written two blog posts in frontFirst article: How to build a MONGO database replica set on the Windows platformSecond: Data synchronization and fault adaptive testingIn this article, let's focus on the replication set, and analyze how it

1. Start mongodbusrlocalmongodbbinmongod -- dbpathvarmongodbdata -- logpathvarmongodblogslog. log-fork2. Verify start mongodbusrlocalmongodbbinmongod -- dbpathvarmongodbdata -- logpathvarmongodblogslog. log-auth- 1. start mongodb/usr/local/mongodb/bin/mongod -- dbpath =/var/mongodb/data -- logpath/var/mongodb/logs/log without verification. log-fork 2. verify that mongodb/usr/local/mongodb/bin/mongod -- dbpath =/var/mongodb/data -- logpath/var/mongodb/logs/log

In the php database, what is the type of the temperature Celsius field added? displayed on the page = What are the settings required? php nbsp; what is the field type of the temperature Celsius field added to the

replace; alter database $ dbname set online" Incremental recovery: osql-U $ user-P "$ password"-d master-S $ instance-Q "alter database $ dbname set offline with rollback immediate; restore database $ dbname from disk = '$ filename' with replace, NORECOVERY; restore database $ dbname from dist =' $ diff_filename 'with

Database Name (db_name), Instance name (instance_name), oracle_sidRecently, some people in the Forum asked about this issue and sorted out their understanding and relevant materials as follows. If not all or improperly, I hope to correct and complete it.Database Name (db_name), Instance name (instance_name), and operating system environment variable (oracle_sid)In oracle7 and 8 databases, only the Database

such as the User's avatar some people say is saved on the server I do not know what the server is what ah in my mind there is no concept I know that the database is to keep things l

Tags: NTA DDR detail replica set security one record lock AssociationThis series wants to share with you the following chapters (I will continue to update the (^ω^)): 1. One of the MONGO 3.4 Shard Cluster Series: A brief discussion on shard cluster 2, MONGO 3.4 Shard Cluster Series two: Building a shard cluster--Hash shard 3, MONGO 3.4 Shard Cluster Series three:

Add the temperature Celsius (℃) field to the PHP database what type is displayed on the page = what settings are required PHP adds a field of temperature Celsius to a database table what type of field

Robomongo 0.9.0 Connection failed while connecting to MONGO database. (IP and port number determination is right)Basic points of attention:1, the MongoDB service opens, when opened, specify the port number, the default is 27017, using the default value, do not specify.2, firewall shutdown or allow port (6666) through t

from the file system 2. If you want to modify the document on the Gridfs, you can only delete the existing file, The entire document is then re-saved. The simplest way to use the GRIDFS is to use the Mongofiles tool, which is included in all

Tags: log logs database operation record Ffline false data new Db.getcollection ('Product').Update({Status: "Offline"},{$Set: {status: "Online"}},false,true) update, change all status offline to online, note quotes db.collection.Update(criteria, objnew, Upsert, Multi) The description of the four parameters is as follows: The criteria:update query condition, similar to the Objnew:update object within the whe

In our previous blog, we focused on how to build a MongoDB replica set under the Windows platform. Detailed Blog Address:As space is limited in the previous article did not verify the results, in this blog we mainly test:Through the Rs.status () command we can query to each node to run normally.First, the data synchronization testInsert on port 28011, 28012:View reason: Find the answer onlineFirst of all this is