{"id":21523,"date":"2024-01-02T10:48:20","date_gmt":"2024-01-02T10:48:20","guid":{"rendered":"https:\/\/server.hk\/blog\/21523\/"},"modified":"2024-11-14T10:31:20","modified_gmt":"2024-11-14T02:31:20","slug":"mongodb-glossary-namespace","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/21523\/","title":{"rendered":"MongoDB \u8a5e\u5f59\u8868 &#8211; \u547d\u540d\u7a7a\u9593"},"content":{"rendered":"<h1 id=\"mongodb-glossary-namespace-WHxYLXkpBY\">MongoDB \u8a5e\u5f59\u8868 &#8211; \u547d\u540d\u7a7a\u9593<\/h1>\n<p>\u5728 MongoDB \u4e2d\uff0c\u547d\u540d\u7a7a\u9593\u662f\u6307\u6578\u64da\u5eab\u540d\u7a31\u548c\u96c6\u5408\u540d\u7a31\u7684\u7d50\u5408\u3002\u5b83\u662f\u6578\u64da\u5eab\u4e2d\u67d0\u500b\u7279\u5b9a\u96c6\u5408\u7684\u552f\u4e00\u6a19\u8b58\u7b26\u3002\u4e86\u89e3\u547d\u540d\u7a7a\u9593\u5c0d\u65bc\u6709\u6548\u4f7f\u7528 MongoDB \u548c\u7ba1\u7406\u60a8\u7684\u6578\u64da\u81f3\u95dc\u91cd\u8981\u3002<\/p>\n<h2 id=\"structure-of-a-namespace-WHxYLXkpBY\">\u547d\u540d\u7a7a\u9593\u7684\u7d50\u69cb<\/h2>\n<p>MongoDB \u4e2d\u7684\u547d\u540d\u7a7a\u9593\u9075\u5faa\u7279\u5b9a\u7684\u7d50\u69cb\uff1a<code>database.collection<\/code>\u3002\u6578\u64da\u5eab\u540d\u7a31\u5728\u524d\uff0c\u5f8c\u9762\u8ddf\u8457\u4e00\u500b\u9ede\u865f\uff08.\uff09\uff0c\u518d\u52a0\u4e0a\u96c6\u5408\u540d\u7a31\u3002\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u6709\u4e00\u500b\u540d\u70ba &#8220;mydb&#8221; \u7684\u6578\u64da\u5eab\u548c\u4e00\u500b\u540d\u70ba &#8220;users&#8221; \u7684\u96c6\u5408\uff0c\u5247\u8a72\u96c6\u5408\u7684\u547d\u540d\u7a7a\u9593\u5c07\u662f <code>mydb.users<\/code>\u3002<\/p>\n<h2 id=\"uniqueness-of-namespaces-WHxYLXkpBY\">\u547d\u540d\u7a7a\u9593\u7684\u552f\u4e00\u6027<\/h2>\n<p>\u5728 MongoDB \u4e2d\uff0c\u547d\u540d\u7a7a\u9593\u5728\u55ae\u500b MongoDB \u5be6\u4f8b\u4e2d\u5fc5\u9808\u662f\u552f\u4e00\u7684\u3002\u9019\u610f\u5473\u8457\uff0c\u60a8\u4e0d\u80fd\u5728\u540c\u4e00\u6578\u64da\u5eab\u5167\u64c1\u6709\u5169\u500b\u540c\u540d\u7684\u96c6\u5408\u3002\u7136\u800c\uff0c\u60a8\u53ef\u4ee5\u5728\u4e0d\u540c\u7684\u6578\u64da\u5eab\u4e2d\u64c1\u6709\u540c\u540d\u7684\u96c6\u5408\u800c\u4e0d\u6703\u7522\u751f\u885d\u7a81\u3002<\/p>\n<h2 id=\"namespace-limitations-WHxYLXkpBY\">\u547d\u540d\u7a7a\u9593\u7684\u9650\u5236<\/h2>\n<p>\u4f7f\u7528 MongoDB \u7684\u547d\u540d\u7a7a\u9593\u6642\uff0c\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u500b\u9650\u5236\uff1a<\/p>\n<ul>\n<li>\u547d\u540d\u7a7a\u9593\u7684\u6700\u5927\u9577\u5ea6\u70ba 120 \u5b57\u7bc0\u3002<\/li>\n<li>\u6578\u64da\u5eab\u540d\u7a31\u548c\u96c6\u5408\u540d\u7a31\u4e0d\u80fd\u5305\u542b\u67d0\u4e9b\u5b57\u7b26\uff0c\u4f8b\u5982 null \u5b57\u7b26\uff08\\0\uff09\u6216\u9ede\u865f\uff08.\uff09\u3002<\/li>\n<li>\u6578\u64da\u5eab\u540d\u7a31\u548c\u96c6\u5408\u540d\u7a31\u5340\u5206\u5927\u5c0f\u5beb\u3002\u4f8b\u5982\uff0c&#8221;mydb.users&#8221; \u548c &#8220;mydb.Users&#8221; \u6703\u88ab\u8996\u70ba\u5169\u500b\u4e0d\u540c\u7684\u547d\u540d\u7a7a\u9593\u3002<\/li>\n<\/ul>\n<h2 id=\"namespace-usage-WHxYLXkpBY\">\u547d\u540d\u7a7a\u9593\u7684\u4f7f\u7528<\/h2>\n<p>\u547d\u540d\u7a7a\u9593\u5728 MongoDB \u4e2d\u88ab\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u64cd\u4f5c\uff0c\u5305\u62ec\u67e5\u8a62\u3001\u66f4\u65b0\u548c\u522a\u9664\u6578\u64da\u3002\u7576\u5c0d\u67d0\u500b\u96c6\u5408\u9032\u884c\u64cd\u4f5c\u6642\uff0c\u60a8\u9700\u8981\u6307\u5b9a\u547d\u540d\u7a7a\u9593\u4ee5\u6307\u660e\u8981\u64cd\u4f5c\u7684\u96c6\u5408\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u8981\u67e5\u8a62 &#8220;mydb&#8221; \u6578\u64da\u5eab\u4e2d &#8220;users&#8221; \u96c6\u5408\u7684\u6240\u6709\u6587\u4ef6\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>db.mydb.users.find()\r\n<\/code><\/pre>\n<p>\u540c\u6a23\u5730\uff0c\u82e5\u8981\u5411 &#8220;users&#8221; \u96c6\u5408\u4e2d\u63d2\u5165\u4e00\u500b\u65b0\u6587\u4ef6\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n<pre><code>db.mydb.users.insertOne({ name: \"John\", age: 30 })\r\n<\/code><\/pre>\n<h2 id=\"summary-WHxYLXkpBY\">\u7e3d\u7d50<\/h2>\n<p>\u5728 MongoDB \u4e2d\uff0c\u547d\u540d\u7a7a\u9593\u662f\u6578\u64da\u5eab\u540d\u7a31\u548c\u96c6\u5408\u540d\u7a31\u7684\u7d50\u5408\u3002\u5b83\u4f5c\u70ba\u6578\u64da\u5eab\u4e2d\u67d0\u500b\u7279\u5b9a\u96c6\u5408\u7684\u552f\u4e00\u6a19\u8b58\u7b26\u3002\u7406\u89e3\u547d\u540d\u7a7a\u9593\u662f\u6709\u6548\u4f7f\u7528 MongoDB \u548c\u7ba1\u7406\u6578\u64da\u7684\u95dc\u9375\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u95dc\u65bc VPS \u8a17\u7ba1\u7684\u8cc7\u8a0a\uff0c\u4e26\u63a2\u7d22\u6211\u5011\u9ad8\u8cea\u91cf\u7684 VPS \u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8a2a\u554f <a href=\"https:\/\/server.hk\">Server.HK<\/a>\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MongoDB \u8a5e\u5f59\u8868 &#038;#82&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-21523","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21523","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=21523"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21523\/revisions"}],"predecessor-version":[{"id":23939,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/21523\/revisions\/23939"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=21523"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=21523"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=21523"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}