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.rolesThe
admin.system.rolescollection stores custom roles that administrators create and assign to users to provide access to specific resources.admin.system.usersThe
admin.system.userscollection stores the user's authentication credentials as well as any roles assigned to the user. Users may define authorization roles in theadmin.system.rolescollection.admin.system.versionThe
admin.system.versioncollection 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.rolesadmin.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.usersadmin.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.versionadmin.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.indexBuildsNew in version 4.4.
The
indexBuildscollection 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.indexBuilds4.4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.namespacesNOTE
Removed in 4.2
Starting in MongoDB 4.2,
<database>.system.namespaceshas been removed (access to the collection has been deprecated since 3.0). To list the collections in a database, use thelistCollectionscommand instead.<database>.system.indexesNOTE
Removed in 4.2
Starting in MongoDB 4.2,
<database>.system.indexeshas been removed (access to the collection has been deprecated since 3.0). To list the indexes, use thelistIndexescommand instead.<database>.system.profileThe
.system.profilecollection stores database profiling information. For information on profiling, see Database Profiling.<database>.system.jsThe
.system.jscollection holds special JavaScript code for use in server side JavaScript. See Store a JavaScript Function on the Server for more information.<database>.system.viewsThe
<database>.system.viewscollection 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