MongoDB系统集合
Synopsis 概要
MongoDB stores system information in collections that use the <database>.system.*
namespace, which MongoDB reserves for internal use. Do not create collections that begin with system
.
MongoDB also stores some additional instance-local metadata in the local database, specifically for replication purposes and in the config database for sessions information.
MongoDB将系统信息存储在使用<database>.system.*
命名空间的集合中,这些集合是MongoDB保留供内部使用的。用户请不要创建以system
开头的集合。
MongoDB还将一些额外的本地元数据存储在local
数据库中,专门用于主从复制;并在config
数据库中存储会话信息。
Collections 集合
System collections include these collections stored in the admin
database:
admin.system.roles
The
admin.system.roles
collection stores custom roles that administrators create and assign to users to provide access to specific resources.admin.system.users
The
admin.system.users
collection stores the user's authentication credentials as well as any roles assigned to the user. Users may define authorization roles in theadmin.system.roles
collection.admin.system.version
The
admin.system.version
collection stores metadata to suport internal operations. Do not modify this collection unless specifically instructed to in this documentation or by a MongoDB support engineer.
系统集合包括存储在admin
数据库中的以下集合:
admin.system.roles
admin.system.roles
集合存储管理员创建并分配给用户的自定义角色,以提供对特定资源的访问。admin.system.users
admin.system.users
集合存储用户的身份验证凭据以及分配给该用户的所有角色。用户可以在admin.system.roles
集合中定义授权角色。admin.system.version
admin.system.version
集合存储元数据以支持内部操作。除非本文档或MongoDB支持工程师明确指示,否则请勿修改此集合。
System collections include these collections stored in the config
database:
config.system.indexBuilds
New in version 4.4.
The
indexBuilds
collection stores information related to in-progress index builds.
系统集合包括存储在config
数据库中的以下集合:
config.system.indexBuilds
4.4版本新引入
indexBuilds
集合存储了与正在进行的索引创建有关的信息。
System collections also include these collections stored directly in each database:
<database>.system.namespaces
NOTE
Removed in 4.2
Starting in MongoDB 4.2,
<database>.system.namespaces
has been removed (access to the collection has been deprecated since 3.0). To list the collections in a database, use thelistCollections
command instead.<database>.system.indexes
NOTE
Removed in 4.2
Starting in MongoDB 4.2,
<database>.system.indexes
has been removed (access to the collection has been deprecated since 3.0). To list the indexes, use thelistIndexes
command instead.<database>.system.profile
The
.system.profile
collection stores database profiling information. For information on profiling, see Database Profiling.<database>.system.js
The
.system.js
collection holds special JavaScript code for use in server side JavaScript. See Store a JavaScript Function on the Server for more information.<database>.system.views
The
<database>.system.views
collection contains information about each view in the database.
系统集合还包括以下直接存储在每个数据库中的集合:
<database>.system.namespaces
注意
4.2版本中被移除
从MongoDB 4.2开始,
<database>.system.namespaces
已被删除(从3.0开始不推荐使用该集合)。要列出数据库中的集合,请改用listCollections
命令。<database>.system.indexes
注意
4.2版本中被移除
从MongoDB 4.2开始,
<database>.system.indexes
已被删除(从3.0开始不推荐使用该集合)。要列出数据库中的集合,请改用listIndexes
命令。<database>.system.profile
<database>.system.profile
集合存储数据库分析信息。有关分析的信息,请参见数据库分析。<database>.system.js
<database>.system.js
集合包含用于服务器端JavaScript的特殊JavaScript代码。有关更多信息,请参见在服务器上存储JavaScript函数。<database>.system.views
<database>.system.views
集合包含有关数据库中每个视图的信息。
译者:phoenix
时间: 2021.04.26
原文: https://docs.mongodb.com/manual/reference/system-collections/
版本: 4.4
最后更新于