{"id":478510,"date":"2023-08-09T09:33:56","date_gmt":"2023-08-09T09:33:56","guid":{"rendered":""},"modified":"2023-09-05T11:16:56","modified_gmt":"2023-09-05T11:16:56","slug":"primary-key","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/jp\/wiki\/primary-key\/","title":{"rendered":"\u4e3b\u30ad\u30fc"},"content":{"rendered":"<p>\u4e3b\u30ad\u30fc\u306f\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u7ba1\u7406\u304a\u3088\u3073\u8a2d\u8a08\u306b\u304a\u3051\u308b\u7528\u8a9e\u3067\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9 \u30c6\u30fc\u30d6\u30eb\u5185\u306e\u5404\u884c\u306b\u4e00\u610f\u306e\u5024\u3092\u6301\u3064\u7279\u5b9a\u306e\u5217 (\u307e\u305f\u306f\u5217\u306e\u7d44\u307f\u5408\u308f\u305b) \u3092\u6307\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9 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\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u69cb\u9020\u3092\u5b9a\u7fa9\u3059\u308b\u969b\u306b\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002\u4e3b\u30ad\u30fc\u306f\u4e00\u610f\u6027\u3092\u5f37\u5316\u3057\u3001\u30ec\u30b3\u30fc\u30c9\u306e\u91cd\u8907\u3092\u9632\u3050\u3053\u3068\u3067\u3001\u30c7\u30fc\u30bf\u306e\u6574\u5408\u6027\u3092\u7dad\u6301\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u3053\u306e\u4e00\u610f\u6027\u306f\u3001\u30c7\u30fc\u30bf\u306e\u633f\u5165\u307e\u305f\u306f\u66f4\u65b0\u6642\u306b\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9 \u30b7\u30b9\u30c6\u30e0\u304c\u30c1\u30a7\u30c3\u30af\u3059\u308b\u5236\u7d04\u306b\u3088\u3063\u3066\u5f37\u5236\u3055\u308c\u307e\u3059\u3002<\/p>\n<h3>\u7279\u5fb4:<\/h3>\n<ol>\n<li><strong>\u72ec\u81ea\u6027<\/strong>: 2 \u3064\u306e\u884c\u304c\u540c\u3058\u4e3b\u30ad\u30fc\u5024\u3092\u6301\u3064\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002<\/li>\n<li><strong>\u975e\u30cc\u30eb<\/strong>: \u4e3b\u30ad\u30fc\u306b\u306f\u3059\u3079\u3066\u306e\u884c\u306b\u5024\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<li><strong>\u4e0d\u5909\u6027<\/strong>: \u4e3b\u30ad\u30fc\u306e\u5024\u306f\u4e00\u5ea6\u5b9a\u7fa9\u3059\u308b\u3068\u5909\u66f4\u3057\u306a\u3044\u3067\u304f\u3060\u3055\u3044\u3002<\/li>\n<li><strong>\u30b7\u30f3\u30d7\u30eb\u3055<\/strong>\u6ce8: \u4e3b\u30ad\u30fc\u306f\u8907\u5408 (\u8907\u6570\u306e\u5217) \u306b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u304c\u3001\u4e00\u822c\u7684\u306b\u306f\u3067\u304d\u308b\u3060\u3051\u5358\u7d14\u306b\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n<h2>\u4e3b\u30ad\u30fc\u306e\u5185\u90e8\u69cb\u9020: \u4e3b\u30ad\u30fc\u306e\u4ed5\u7d44\u307f<\/h2>\n<p>\u4e3b\u30ad\u30fc\u306f\u3001\u30ad\u30fc\u3092\u69cb\u6210\u3059\u308b\u5217\u306b\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u3067\u6a5f\u80fd\u3057\u307e\u3059\u3002\u3053\u306e\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306b\u3088\u308a\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9 \u30b7\u30b9\u30c6\u30e0\u306f\u4e3b\u30ad\u30fc\u5024\u306b\u57fa\u3065\u3044\u3066\u884c\u3092\u8fc5\u901f\u306b\u691c\u7d22\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u3001\u52b9\u7387\u7684\u306a\u30af\u30a8\u30ea\u304c\u4fdd\u8a3c\u3055\u308c\u307e\u3059\u3002<\/p>\n<h3>\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8:<\/h3>\n<ul>\n<li><strong>\u5217<\/strong>: \u4e3b\u30ad\u30fc\u3092\u69cb\u6210\u3059\u308b 1 \u3064\u4ee5\u4e0a\u306e\u5217\u3002<\/li>\n<li><strong>\u5236\u7d04<\/strong>: \u4e00\u610f\u6027\u3068\u975e null \u5024\u3092\u7dad\u6301\u3059\u308b\u305f\u3081\u306b\u9069\u7528\u3055\u308c\u308b\u30eb\u30fc\u30eb\u3002<\/li>\n<li><strong>\u7d22\u5f15<\/strong>: \u9ad8\u901f\u306a\u691c\u7d22\u3068\u53d6\u5f97\u3092\u5bb9\u6613\u306b\u3059\u308b\u7279\u5225\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u3002<\/li>\n<\/ul>\n<h2>\u4e3b\u30ad\u30fc\u306e\u4e3b\u306a\u7279\u5fb4\u306e\u5206\u6790<\/h2>\n<p>\u4e3b\u30ad\u30fc\u306e\u6a5f\u80fd\u306f\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u8a2d\u8a08\u306b\u304a\u3044\u3066\u3044\u304f\u3064\u304b\u306e\u5229\u70b9\u3068\u8ab2\u984c\u3092\u3082\u305f\u3089\u3057\u307e\u3059\u3002<\/p>\n<h3>\u5229\u70b9\uff1a<\/h3>\n<ul>\n<li><strong>\u30c7\u30fc\u30bf\u306e\u6574\u5408\u6027<\/strong>: \u30ec\u30b3\u30fc\u30c9\u304c\u4e00\u610f\u3067\u4e00\u8cab\u6027\u304c\u3042\u308b\u3053\u3068\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u4eba\u9593\u95a2\u4fc2<\/strong>: \u5916\u90e8\u30ad\u30fc\u3092\u4ecb\u3057\u3066\u4ed6\u306e\u30c6\u30fc\u30d6\u30eb\u3068\u306e\u95a2\u4fc2\u3092\u5bb9\u6613\u306b\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u52b9\u7387\u7684\u306a\u30af\u30a8\u30ea<\/strong>: \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u4f5c\u6210\u306b\u3088\u308a\u691c\u7d22\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<h3>\u8ab2\u984c:<\/h3>\n<ul>\n<li><strong>\u8a2d\u8a08\u306e\u8907\u96d1\u3055<\/strong>: \u9069\u5207\u306a\u4e3b\u30ad\u30fc\u3092\u9078\u629e\u3059\u308b\u306b\u306f\u3001\u8a2d\u8a08\u3092\u614e\u91cd\u306b\u691c\u8a0e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<li><strong>\u5909\u66f4\u306e\u5236\u9650<\/strong>: \u4e3b\u30ad\u30fc\u306e\u5909\u66f4\u306f\u8907\u96d1\u3067\u5371\u967a\u3092\u4f34\u3046\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2>\u4e3b\u30ad\u30fc\u306e\u7a2e\u985e: \u30c6\u30fc\u30d6\u30eb\u3068\u30ea\u30b9\u30c8\u3092\u4f7f\u7528\u3057\u3066\u66f8\u304d\u8fbc\u3080<\/h2>\n<p>\u4e3b\u30ad\u30fc\u306f\u6b21\u306e\u30bf\u30a4\u30d7\u306b\u5206\u985e\u3067\u304d\u307e\u3059\u3002<\/p>\n<ol>\n<li><strong>\u5358\u7d14\u306a\u4e3b\u30ad\u30fc<\/strong>: \u5358\u4e00\u306e\u5217\u3067\u69cb\u6210\u3055\u308c\u307e\u3059\u3002<\/li>\n<li><strong>\u8907\u5408\u4e3b\u30ad\u30fc<\/strong>: \u8907\u6570\u306e\u5217\u3067\u69cb\u6210\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ol>\n<table>\n<thead>\n<tr>\n<th>\u30bf\u30a4\u30d7<\/th>\n<th>\u8aac\u660e<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u5358\u7d14\u306a\u4e3b\u30ad\u30fc<\/td>\n<td>1 \u3064\u306e\u5217\u3092\u4f7f\u7528\u3057\u3066\u4e00\u610f\u6027\u3092\u5f37\u5316\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u8907\u5408\u4e3b\u30ad\u30fc<\/td>\n<td>\u8907\u6570\u306e\u5217\u3092\u4f7f\u7528\u3057\u3066\u4e00\u610f\u6027\u3092\u5f37\u5316\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u4e3b\u30ad\u30fc\u306e\u4f7f\u3044\u65b9\u3068\u305d\u306e\u554f\u984c\u70b9\u3068\u305d\u306e\u89e3\u6c7a\u65b9\u6cd5<\/h2>\n<p>\u4e3b\u30ad\u30fc\u306f\u3001\u30c7\u30fc\u30bf\u306e\u4e00\u8cab\u6027\u3092\u78ba\u4fdd\u3057\u3001\u7c21\u5358\u306b\u53d6\u5f97\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u8ab2\u984c\u304c\u751f\u3058\u308b\u53ef\u80fd\u6027\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>\u3088\u304f\u3042\u308b\u554f\u984c:<\/h3>\n<ul>\n<li><strong>\u9593\u9055\u3063\u305f\u30ad\u30fc\u306e\u9078\u629e<\/strong>\uff1a\u975e\u52b9\u7387\u306b\u3064\u306a\u304c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<li><strong>\u79fb\u884c\u306e\u554f\u984c<\/strong>: \u4e3b\u30ad\u30fc\u306e\u5909\u66f4\u306f\u8907\u96d1\u306b\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n<h3>\u89e3\u6c7a\u7b56:<\/h3>\n<ul>\n<li><strong>\u4e01\u5be7\u306a\u30c7\u30b6\u30a4\u30f3<\/strong>: \u9069\u5207\u306a\u8a08\u753b\u3068\u8a2d\u8a08\u306b\u3088\u308a\u3001\u307b\u3068\u3093\u3069\u306e\u554f\u984c\u3092\u8efd\u6e1b\u3067\u304d\u307e\u3059\u3002<\/li>\n<li><strong>\u30c4\u30fc\u30eb\u3068\u5c02\u9580\u77e5\u8b58<\/strong>: \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u8a2d\u8a08\u30c4\u30fc\u30eb\u3068\u5c02\u9580\u77e5\u8b58\u3092\u6d3b\u7528\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2>\u4e3b\u306a\u7279\u5fb4\u3068\u985e\u4f3c\u7528\u8a9e\u3068\u306e\u6bd4\u8f03<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u5b66\u671f<\/th>\n<th>\u610f\u5473<\/th>\n<th>\u4e3b\u30ad\u30fc\u3068\u306e\u6bd4\u8f03<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u4e3b\u30ad\u30fc<\/td>\n<td>\u30c6\u30fc\u30d6\u30eb\u5185\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u4e00\u610f\u306b\u8b58\u5225\u3057\u307e\u3059\u3002<\/td>\n<td>\u2013<\/td>\n<\/tr>\n<tr>\n<td>\u4e00\u610f\u306e\u30ad\u30fc<\/td>\n<td>\u4e00\u610f\u6027\u3092\u5f37\u5236\u3057\u307e\u3059\u304c\u3001null \u306b\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/td>\n<td>\u4e3b\u30ad\u30fc\u3088\u308a\u3082\u53b3\u5bc6\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u5916\u90e8\u30ad\u30fc<\/td>\n<td>2 \u3064\u306e\u30c6\u30fc\u30d6\u30eb\u3092\u30ea\u30f3\u30af\u3057\u3001\u5225\u306e\u30c6\u30fc\u30d6\u30eb\u306e\u4e3b\u30ad\u30fc\u3092\u53c2\u7167\u3057\u307e\u3059\u3002<\/td>\n<td>\u95a2\u4fc2\u3092\u5f37\u5316\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u4e3b\u30ad\u30fc\u306b\u95a2\u3059\u308b\u5c06\u6765\u306e\u5c55\u671b\u3068\u6280\u8853<\/h2>\n<p>\u4e3b\u30ad\u30fc\u306e\u5c06\u6765\u306f\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9 \u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u3068\u4eba\u5de5\u77e5\u80fd\u306e\u9032\u6b69\u3068\u7d61\u307f\u5408\u3046\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u81ea\u52d5\u5316\u3055\u308c\u305f\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u8a2d\u8a08\u3001\u3088\u308a\u5805\u7262\u306a\u6574\u5408\u6027\u5236\u7d04\u3001\u304a\u3088\u3073\u65b0\u3057\u3044\u30bf\u30a4\u30d7\u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9 (NoSQL \u306a\u3069) 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\u30b5\u30fc\u30d0\u30fc\u306e\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u3067\u4e3b\u30ad\u30fc\u304c\u3069\u306e\u3088\u3046\u306b\u95a2\u9023\u3059\u308b\u304b\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u306f\u3001\u300c\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306e\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u3067\u4e3b\u30ad\u30fc\u304c\u3069\u306e\u3088\u3046\u306b\u95a2\u9023\u3059\u308b\u304b\u300d\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<\/ol>\n<hr>\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u8a2d\u8a08\u306b\u643a\u308f\u3063\u3066\u3044\u308b\u4eba\u3001\u307e\u305f\u306f\u30c7\u30fc\u30bf\u7ba1\u7406\u306e\u57fa\u790e\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u306b\u8208\u5473\u304c\u3042\u308b\u4eba\u306b\u3068\u3063\u3066\u91cd\u8981\u306a\u3001\u4e3b\u306a\u91cd\u8981\u306a\u6982\u5ff5\u306e\u5e83\u7bc4\u306a\u6982\u8981\u3092\u8aac\u660e\u3057\u307e\u3059\u3002 OneProxy \u306e\u3088\u3046\u306a\u7d44\u7e54\u306b\u3068\u3063\u3066\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u69cb\u9020\u306b\u304a\u3051\u308b\u4e3b\u30ad\u30fc\u306e\u5f79\u5272\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u306f\u3001\u30b9\u30b1\u30fc\u30e9\u30d6\u30eb\u3067\u52b9\u7387\u7684\u306a\u30b7\u30b9\u30c6\u30e0\u3092\u69cb\u7bc9\u3059\u308b\u305f\u3081\u306b\u91cd\u8981\u3067\u3059\u3002<\/p>","protected":false},"featured_media":469211,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-478510","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Primary Key<\/mark>","faq_items":[{"question":"What is a Primary Key?","answer":"<p>A primary key is a specific column or set of columns with a unique value for each row within a database table. It ensures that each record can be uniquely identified, maintaining data integrity and consistency.<\/p>"},{"question":"What are the Main Types of Primary Keys?","answer":"<p>There are two main types of primary keys: Simple Primary Key, which consists of a single column, and Composite Primary Key, which consists of multiple columns.<\/p>"},{"question":"How Does a Primary Key Work?","answer":"<p>A primary key works by creating an index on the column(s) that make up the key. This allows for quick lookup and retrieval of rows based on primary key values, aiding in efficient queries.<\/p>"},{"question":"What Are the Benefits and Challenges of Using a Primary Key?","answer":"<p>The benefits of using a primary key include ensuring data integrity, facilitating relationships with other tables, and enhancing search performance. Challenges may include design complexity and modification restrictions.<\/p>"},{"question":"How are Primary Keys Different from Unique Keys and Foreign Keys?","answer":"<p>Primary keys uniquely identify a record in a table and cannot be null. Unique keys also enforce uniqueness but can be null, while foreign keys are used to link two tables together and reference a primary key in another table.<\/p>"},{"question":"What Future Technologies and Perspectives are Related to Primary Keys?","answer":"<p>The future of primary keys may involve advancements in database technologies and artificial intelligence, including automated database design, more robust integrity constraints, and integration with new types of databases such as NoSQL.<\/p>"},{"question":"How are Proxy Servers like OneProxy Associated with Primary Keys?","answer":"<p>In the context of proxy server providers like OneProxy, primary keys might be part of the underlying databases used to manage client configurations, user credentials, and logs. Proper utilization of primary keys ensures the efficient operation, scalability, and security of proxy services.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki\/478510","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki\/478510\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media\/469211"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media?parent=478510"}],"curies":[{"name":"\u3046\u30fc\u3093","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}