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  • Database Commands

    580 2019-12-01 《MongoDB v4.2 Manual》
    Database Commands User Commands Aggregation Commands Geospatial Commands Query and Write Operation Commands Query Plan Cache Commands Database Operations Authentication Comman...
  • Config Database

    862 2019-12-01 《MongoDB v4.2 Manual》
    Config Database Restrictions Collections to Support Sharded Cluster Operations Collections to Support Sessions Config Database The collections in the config database suppor...
  • CREATE DATABASE

    CREATE DATABASE Description example keyword CREATE DATABASE Description This statement is used to create a new database Grammar: CREATE DATABASE [IF NOT EXISTS] db_name; ...
  • LINK DATABASE

    LINK DATABASE description example keyword LINK DATABASE description (已废弃!!!) 该语句用户链接一个逻辑集群的数据库到另外一个逻辑集群, 一个数据库只允许同时被链接一次,删除链接的数据库 并不会删除数据,并且被链接的数据库不能被删除, 需要管理员权限...
  • ALTER DATABASE

    ALTER DATABASE description example keyword ALTER DATABASE description This statement is used to set the properties of the specified database. (Administrators only) Grammar...
  • LINK DATABASE

    LINK DATABASE Description example keyword LINK DATABASE Description This statement allows users to link a database of one logical cluster to another logical cluster. A dat...
  • Database instrumentation

    Database instrumentation connection.execute_wrapper() Database instrumentation To help you understand and control the queries issued by your code, Djangoprovides a hook for in...
  • Database Names

    Database Names Database Names ArangoDB will always start up with a default database, named _system.Users can create additional databases in ArangoDB, provided the databasenames...
  • Database Methods

    Database Methods Collection Create All Collections Collection Name Drop Truncate Database Methods Collection returns a single collection or nulldb._collection(collecti...
  • Database Methods

    Database Methods Collection Create All Collections Collection Name Drop Truncate Database Methods Collection returns a single collection or nulldb._collection(collecti...