{"id":2144,"date":"2026-08-18T07:03:18","date_gmt":"2026-08-18T07:03:18","guid":{"rendered":"https:\/\/www.vpascode.com\/ja\/building-a-hotel-management-erd-with-plantuml-and-vpascode\/"},"modified":"2026-08-18T07:03:18","modified_gmt":"2026-08-18T07:03:18","slug":"building-a-hotel-management-erd-with-plantuml-and-vpascode","status":"publish","type":"post","link":"https:\/\/www.vpascode.com\/ja\/building-a-hotel-management-erd-with-plantuml-and-vpascode\/","title":{"rendered":"PlantUML\u3068VPasCode\u3092\u7528\u3044\u305f\u30db\u30c6\u30eb\u7ba1\u7406ERD\u306e\u69cb\u7bc9"},"content":{"rendered":"<p><img fetchpriority=\"high\" alt='A YouTube thumbnail-style graphic featuring the bold text \"BUILD PROFESSIONAL DATABASE DIAGRAMS\" in large uppercase letters, with a pointing finger icon on the right and a rendered Entity Relationship Diagram displayed in the background.' class=\"alignnone size-full wp-image-2717\" decoding=\"async\" fetchpriority=\"high\" height=\"768\" sizes=\"(max-width: 1376px) 100vw, 1376px\" src=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/08\/build-professional-database-diagrams-thumbnail.jpg\" srcset=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/08\/build-professional-database-diagrams-thumbnail.jpg 1376w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/08\/build-professional-database-diagrams-thumbnail-300x167.jpg 300w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/08\/build-professional-database-diagrams-thumbnail-1024x572.jpg 1024w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/08\/build-professional-database-diagrams-thumbnail-768x429.jpg 768w\" width=\"1376\"\/><\/p>\n<p>\u30db\u30b9\u30d4\u30bf\u30ea\u30c6\u30a3\u306e\u3088\u3046\u306a\u8907\u96d1\u306a\u5206\u91ce\u306e\u5805\u7262\u306a\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3092\u8a2d\u8a08\u3059\u308b\u969b\u3001\u95a2\u4fc2\u3092\u660e\u78ba\u306b\u53ef\u8996\u5316\u3059\u308b\u3053\u3068\u306f\u975e\u5e38\u306b\u91cd\u8981\u3067\u3059\u3002\u9867\u5ba2\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb\u306e\u30de\u30c3\u30d4\u30f3\u30b0\u3001\u90e8\u5c4b\u5728\u5eab\u306e\u8ffd\u8de1\u3001\u8acb\u6c42\u306e\u7ba1\u7406\u306a\u3069\u3001\u3042\u3089\u3086\u308b\u5834\u9762\u3067\u3001\u69cb\u9020\u304c\u6574\u3063\u305f\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u95a2\u4fc2\u56f3\uff08ERD\uff09\u306f\u958b\u767a\u4e2d\u306b\u81a8\u5927\u306a\u6642\u9593\u3092\u7bc0\u7d04\u3057\u307e\u3059\u3002\u3053\u306e\u30de\u30b9\u30bf\u30fc\u30af\u30e9\u30b9\u3067\u306f\u3001PlantUML\u3092\u7528\u3044\u3066\u3001VPasCode\u306e\u5185\u90e8\u3067\u3001\u3069\u306e\u3088\u3046\u306b\u5305\u62ec\u7684\u306a\u30db\u30c6\u30eb\u7ba1\u7406ERD\u3092\u30bc\u30ed\u304b\u3089\u69cb\u7bc9\u3057\u305f\u304b\u3092\u4e01\u5be7\u306b\u8aac\u660e\u3057\u307e\u3059\u3002<a href=\"https:\/\/www.vpascode.com\/editor\/\">\u7121\u6599\u306ePlantUML\u30a8\u30c7\u30a3\u30bf<\/a>, <a href=\"https:\/\/vpascode.com\/\">VPasCode<\/a>.<\/p>\n<p id=\"LzlMgfr\"><img alt=\"\" class=\"alignnone size-full wp-image-2661\" decoding=\"async\" height=\"738\" sizes=\"(max-width: 1508px) 100vw, 1508px\" src=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/08\/img_6a83fec0372f7.png\" srcset=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/08\/img_6a83fec0372f7.png 1508w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/08\/img_6a83fec0372f7-300x147.png 300w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/08\/img_6a83fec0372f7-1024x501.png 1024w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/08\/img_6a83fec0372f7-768x376.png 768w\" width=\"1508\"\/><\/p>\n<h2>1. PlantUML\u74b0\u5883\u306e\u521d\u671f\u5316<\/h2>\n<p>\u307e\u305a\u3001\u30b9\u30af\u30ea\u30d7\u30c8\u306e\u57fa\u76e4\u69cb\u9020\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002\u591a\u6570\u306e\u5c5e\u6027\u3092\u542b\u3080\u8907\u96d1\u306a\u30b9\u30ad\u30fc\u30de\u3092\u6271\u3046\u969b\u3001\u30ec\u30a4\u30a2\u30a6\u30c8\u306e\u53ef\u8aad\u6027\u304c\u6700\u3082\u91cd\u8981\u3067\u3059\u3002\u4e0d\u8981\u306a\u3054\u3061\u3083\u3054\u3061\u3083\u3092\u975e\u8868\u793a\u306b\u3057\u3001\u56f3\u306e\u30ec\u30a4\u30a2\u30a6\u30c8\u65b9\u5411\u3092\u6700\u9069\u5316\u3059\u308b\u3088\u3046\u306bPlantUML\u3092\u8a2d\u5b9a\u3057\u307e\u3059\uff1a<\/p>\n<pre><code class=\"language-plantuml\">\r\n@startuml \r\ntitle \u30db\u30c6\u30eb\u7ba1\u7406ERD\r\n\r\nhide circle\r\nleft to right direction\r\n    <\/code><\/pre>\n<p><strong>\u306a\u305c\u3053\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u306a\u306e\u304b\uff1f<\/strong>\u30c7\u30d5\u30a9\u30eb\u30c8\u306e\u5c5e\u6027\u5186\u3092\u975e\u8868\u793a\u306b\u3059\u308b\u3053\u3068\u3067\u3001\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u30dc\u30c3\u30af\u30b9\u3092\u6d17\u7df4\u3055\u308c\u3001\u73fe\u4ee3\u7684\u306a\u898b\u305f\u76ee\u306b\u4fdd\u3061\u307e\u3059\u3002\u65b9\u5411\u3092<code>left to right direction<\/code>\u306b\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u5e83\u3044ERD\u304c\u7e26\u65b9\u5411\u306b\u7ba1\u7406\u4e0d\u80fd\u306b\u306a\u308b\u306e\u3092\u9632\u304e\u3001\u8907\u6570\u30c6\u30fc\u30d6\u30eb\u9593\u306e\u95a2\u4fc2\u3092\u8ad6\u7406\u7684\u306b\u5e83\u3052\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>2. \u30b3\u30a2\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3068\u5c5e\u6027\u306e\u5b9a\u7fa9<\/h2>\n<p>\u6b21\u306b\u3001\u30d3\u30b8\u30cd\u30b9\u30c9\u30e1\u30a4\u30f3\u3092\u8868\u3059\u30b3\u30a2\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3092\u5b9a\u7fa9\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u5404\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306b\u306f\u4e3b\u30ad\u30fc\u3001\u4e00\u610f\u5236\u7d04\u3001\u578b\u4ed8\u304d\u5c5e\u6027\u3092\u69cb\u9020\u5316\u3057\u3066\u5b9a\u7fa9\u3057\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u3001\u30b3\u30a2\u306e<code>Customer<\/code>\u304a\u3088\u3073<code>RoomType<\/code>\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306e\u8a2d\u5b9a\u65b9\u6cd5\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\uff1a<\/p>\n<pre><code class=\"language-plantuml\">\r\nentity \"Customer\" as customer {\r\n  * customer_id : UUID &lt;&lt;PK&gt;&gt;\r\n  --\r\n  first_name : VARCHAR(50)\r\n  last_name : VARCHAR(50)\r\n  email : VARCHAR(100) &lt;&lt;UK&gt;&gt;\r\n  phone : VARCHAR(20)\r\n  address : TEXT\r\n  loyalty_points : INTEGER\r\n  total_stays : INTEGER\r\n  date_registered : TIMESTAMP\r\n  date_of_birth : DATE\r\n  nationality : VARCHAR(50)\r\n}\r\n\r\nentity \"RoomType\" as roomtype {\r\n  * room_type_id : UUID &lt;&lt;PK&gt;&gt;\r\n  --\r\n  type_name : VARCHAR(50) &lt;&lt;UK&gt;&gt;\r\n  description : TEXT\r\n  standard_capacity : INTEGER\r\n  base_price : DECIMAL(10,2)\r\n  extra_bed_charge : DECIMAL(10,2)\r\n  has_kitchenette : BOOLEAN\r\n  has_balcony : BOOLEAN\r\n}\r\n    <\/code><\/pre>\n<p>&lt;&lt;PK&gt;&gt;\u3084&lt;&lt;UK&gt;&gt;\u306e\u3088\u3046\u306a\u660e\u78ba\u306a\u30de\u30fc\u30ab\u30fc\u3092\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u3067\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u79fb\u884c\u30b9\u30af\u30ea\u30d7\u30c8\u304c\u66f8\u304b\u308c\u308b\u524d\u304b\u3089\u3001\u8ab0\u304c\u30b3\u30fc\u30c9\u3092\u78ba\u8a8d\u3057\u3066\u3082\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u4ed8\u3051\u3084\u4e00\u610f\u6027\u306e\u30eb\u30fc\u30eb\u3092\u5373\u5ea7\u306b\u7406\u89e3\u3067\u304d\u307e\u3059\u3002<code>&lt;&lt;PK&gt;&gt;<\/code>\u304a\u3088\u3073<code>&lt;&lt;UK&gt;&gt;<\/code>\u3001\u8ab0\u304c\u30b3\u30fc\u30c9\u3092\u78ba\u8a8d\u3057\u3066\u3082\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u4ed8\u3051\u3084\u4e00\u610f\u6027\u306e\u30eb\u30fc\u30eb\u3092\u5373\u5ea7\u306b\u7406\u89e3\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>3. \u64cd\u4f5c\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306e\u30de\u30c3\u30d4\u30f3\u30b0\uff08\u90e8\u5c4b\u3001\u4e88\u7d04\u3001\u30b9\u30bf\u30c3\u30d5\uff09<\/h2>\n<p>\u53c2\u7167\u30c7\u30fc\u30bf\u3092\u6574\u3048\u305f\u5f8c\u3001\u30db\u30c6\u30eb\u7ba1\u7406\u30b7\u30b9\u30c6\u30e0\u306e\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u306e\u6838\u3068\u306a\u308b\u90e8\u5c4b\u3001\u4e88\u7d04\u3001\u30b9\u30bf\u30c3\u30d5\u306e\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u306b\u79fb\u884c\u3057\u307e\u3059\u3002\u5404\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u306f\u5916\u90e8\u30ad\u30fc\u3092\u4f7f\u3063\u3066\u3001\u57fa\u76e4\u3068\u306a\u308b\u30c6\u30fc\u30d6\u30eb\u306b\u30ea\u30f3\u30af\u3057\u307e\u3059\uff1a<\/p>\n<pre><code class=\"language-plantuml\">\r\nentity \"Room\" as room {\r\n  * room_id : UUID &lt;&lt;PK&gt;&gt;\r\n  --\r\n  room_number : VARCHAR(10) &lt;&lt;UK&gt;&gt;\r\n  floor_number : INTEGER\r\n  room_type_id : UUID &lt;&lt;FK&gt;&gt;\r\n  capacity : INTEGER\r\n  base_price : DECIMAL(10,2)\r\n  is_available : BOOLEAN\r\n  has_view : BOOLEAN\r\n  square_feet : INTEGER\r\n  last_renovated : DATE\r\n}\r\n\r\nentity \"Reservation\" as reservation {\r\n  * reservation_id : UUID &lt;&lt;PK&gt;&gt;\r\n  --\r\n  customer_id : UUID &lt;&lt;FK&gt;&gt;\r\n  room_id : UUID &lt;&lt;FK&gt;&gt;\r\n  check_in_date : DATE\r\n  check_out_date : DATE\r\n  number_of_guests : INTEGER\r\n  total_amount : DECIMAL(10,2)\r\n  status : VARCHAR(20)\r\n  special_requests : TEXT\r\n  created_at : TIMESTAMP\r\n  updated_at : TIMESTAMP\r\n  confirmation_code : VARCHAR(20) &lt;&lt;UK&gt;&gt;\r\n}\r\n    <\/code><\/pre>\n<h2>4. \u8ca1\u52d9\u304a\u3088\u3073\u30b5\u30fc\u30d3\u30b9\u95a2\u4fc2\u306e\u78ba\u7acb<\/h2>\n<p>\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3092\u5b8c\u6210\u3055\u305b\u308b\u305f\u3081\u306b\u3001\u652f\u6255\u3044\u8a18\u9332\uff08\u652f\u6255\u3044\u3068\u8acb\u6c42\u66f8\uff09\u304a\u3088\u3073\u30db\u30c6\u30eb\u30b9\u30bf\u30c3\u30d5\u304c\u62c5\u5f53\u3059\u308b\u88dc\u52a9\u30b5\u30fc\u30d3\u30b9\uff08\u30eb\u30fc\u30e0\u30b5\u30fc\u30d3\u30b9\u306a\u3069\uff09\u3092\u30de\u30c3\u30d4\u30f3\u30b0\u3057\u307e\u3059\u3002\u3059\u3079\u3066\u3092\u3064\u306a\u3052\u308b\u305f\u3081\u306b\u3001\u6a19\u6e96\u7684\u306aPlantUML\u8868\u8a18\u3092\u4f7f\u3063\u3066\u3001\u30ab\u30fc\u30c7\u30a3\u30ca\u30ea\u30c6\u30a3\u3092\u660e\u78ba\u306b\u5b9a\u7fa9\u3057\u307e\u3059\uff1a<\/p>\n<pre><code class=\"language-plantuml\">\r\n' \u95a2\u4fc2\u6027\r\ncustomer ||--o{ reservation : \"\u4f5c\u6210\u3059\u308b\"\r\nroom ||--o{ reservation : \"\u5272\u308a\u5f53\u3066\u3089\u308c\u308b\"\r\nreservation ||--|| payment : \"\u4fdd\u6709\u3059\u308b\"\r\nreservation ||--|| invoice : \"\u751f\u6210\u3059\u308b\"\r\nreservation ||--o{ roomservice : \"\u4f9d\u983c\u3059\u308b\"\r\nstaff ||--o{ roomservice : \"\u5bfe\u5fdc\u3059\u308b\"\r\nroomtype ||--o{ room : \"\u5206\u985e\u3059\u308b\"\r\n\r\n@enduml\r\n    <\/code><\/pre>\n<p><strong>\u8a2d\u8a08\u9078\u629e:<\/strong>\u6b63\u78ba\u306a\u30af\u30ed\u30a6\u30ba\u30d5\u30c3\u30c8\u8a18\u6cd5\uff08\u4f8b\u3048\u3070 <code>||--o{<\/code>\u5fc5\u9808\u5bfe\u30aa\u30d7\u30b7\u30e7\u30f3\u306e1\u5bfe\u591a\u95a2\u4fc2\u3092\u8868\u3059\u305f\u3081\u306b\uff09\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u4e88\u7d04\u306b\u306f\u9867\u5ba2\u304c\u5fc5\u8981\u3060\u304c\u3001\u9867\u5ba2\u304c\u8907\u6570\u307e\u305f\u306f\u30bc\u30ed\u306e\u30a2\u30af\u30c6\u30a3\u30d6\u306a\u4e88\u7d04\u3092\u6301\u3064\u53ef\u80fd\u6027\u304c\u3042\u308b\u3068\u3044\u3063\u305f\u30d3\u30b8\u30cd\u30b9\u30ed\u30b8\u30c3\u30af\u30eb\u30fc\u30eb\u304c\u6b63\u78ba\u306b\u30e2\u30c7\u30eb\u5316\u3055\u308c\u307e\u3059\u3002<\/p>\n<section class=\"post-section\">\u00a0<\/section>\n<hr\/>\n<h2>\u5b8c\u5168\u306aPlantUML\u30b9\u30af\u30ea\u30d7\u30c8<\/h2>\n<p>\u3053\u3053\u306b\u3001\u30db\u30c6\u30eb\u7ba1\u7406ERD\u306e\u5b8c\u5168\u306a\u7d71\u5408\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u3092\u793a\u3057\u307e\u3059\u3002\u3053\u306e\u30b3\u30fc\u30c9\u3092\u3001\u304a\u597d\u307f\u306e <strong>\u7121\u6599\u306ePlantUML\u30a8\u30c7\u30a3\u30bf<\/strong>\u306b\u30b3\u30d4\u30fc\uff06\u30da\u30fc\u30b9\u30c8\u3057\u3066\u3001\u7de8\u96c6\u307e\u305f\u306f\u30d9\u30af\u30bf\u30fc\u30b0\u30e9\u30d5\u30a3\u30c3\u30af\u30b9\u306e\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u304c\u53ef\u80fd\u3067\u3059\uff1a<\/p>\n<div class=\"vpascode-viewer-container vpascode-fancy-active\">\n<div class=\"vpascode-header\">\n<span class=\"vpascode-lang-label\">PlantUML<\/span><br \/>\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#plantuml:nPRVRzis4CVV3VX_8FAojLY0BCDUWcAe5nkhWQOj77VO6t6MJXOHYbJ9arklwV--8sKfaYKLQ5xs8eZy7dzzxex7rvx0KLLeCP_DPwH8etXZ2RMu0mDxBD2GM6sMGSrLYY9HBj4udsdCI90LJkrp4gboc92o9jZz99QOAOE2nofIwCLdHRa08gTs5Q6Vpw9o51UtbITReBiGu4LoQeYlyvaGBzksLAcu4Hy_hfVYrHz1khmCtqmvJz90WQp-lTZSlbbiVlxzwaNGD4nAM83IdUvVhwvUdEOjSskw8wxh4P2c3hrdORlwPnkdjqVGT9IbLOQ2i7wtNVsrsWIDB86MZFLu9gH0A1tkbITq68wqNT-jxhUBkm-jR3EvKuvXtOZbOhiA_GO2Lz21rzbXlWNQ3SgDjKN4wFYdGHZ-9_15oLJ5Ze5tQJGmCcsjUpBe72IEf6E9WvaJA26fDzgntu57MJgL1BRBrUtwRl6M5_hbEj9LNiA1NG8x7VG_txz_krgy2qeENXuKVkxt-ayLE9GP8lMNYJvtQEo1IQOjmG6aBU-y1HMEqOCrUgwQM9I6GNMoIT4dJfN1MPr8uJWmARXKFWSDVY47SeSyEWUt7xK9a1uK9JaQ91eXk0ETM7Fi2dqawD4TOf3LL9xQBPYdhWaqawaw6e2ysUH1AYD3p7T2lUwt5PqBTHI6xDXNwCSp3WfR6Hf3n3wWoW_psfUOA1xfy5CpQ-Esn6488WbqdgPLcKueJ9clfAB6bDZqx2Q9P--H_m37SBr6wcNztn0_DQTIzpl-cCRGp7bYszjxenL8kKqx6_-jHiLnQ3maJoiEut-ACXS6vBIGbTCTm0wpogIJJkjnMfk3vGo9d5Jztt0wDP_1gHavk06lsnCfxolsz5aifXMUT_bg5sDmZ3h1bz6Ov8s5vQSJ-tbHtGDtJv1b4PiFVmsqsFY_Ywgp6eTnblCxOa0NDBZZA89SPIGzNnjffKTs5KeBn-m1foy_lfxkQrUq9U7acfRMoLC_7cBZd9lvOkKPR7cyYfnkA4cgmE6rKvGQumR6vAcqd2Wwt-e7t0PrF1CJBlcvrhxC7XylB-tNNesu4HS5FA2_cC_YosFS1BnNUyDbcMmmx8Z1_l6nlG3PbglMk4sJ_6opvtBdE4x6BCFg7J-oTNF3it6T2UDcMQKpfNLpbEYXZcKmINZDlNNgtxZoVFOQJSglv_y0\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 8px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>VPasCode\u3067PlantUML\u3092\u7de8\u96c6<\/span><br \/>\n<\/a>\n<\/div>\n<div class=\"vpascode-code-wrapper\">\n            <div class=\"vpascode-viewer-container vpascode-fancy-active\">\r\n                                <div class=\"vpascode-header\">\r\n                    <span class=\"vpascode-lang-label\">Plantuml<\/span>\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#plantuml:nPPRRzn45CVVLzhlOEK5YXef1F5I8TIbMK6afgt25l5cpTfdur5jZpipNhfgAX4RHGdXeUfLqBGq1T6YIgdAHGBK9XzckhlaMp0pliHUsqZaXPVLUlxdd9dvdNDcvYpZYFBGSursgztYcBjWYFY1Y3T5_7owlpUzkTbTNLAQWsqmB4mj5zej5mRSuCIWUCtXXeqfM1mJNzczPOZecOX_LI6Y7zBVZMVZbuycNpuLqQtn_dVJWv_RBV3bR2DZxcZlwNZ_oPo1c665Z1CFg76ztJACT_9l4zl66UFovUKbuuCFbJG_htu7c39k-iW3gNxMMJttIMVrxVSNJYdDHOqIU0YxXU5t5nPEfN43X_X5ZyN40zas1SQaqEj-tjFXoGYvV6G61FjS2SiNUjsFkwjAuuGZrvHSHpE2ZJYO5DOmuq11RQctlDBzjDTPkPJBP63sCUME59SwlQuQzv52Yrn5QsOpDnJm76Gi8Uzea9GGBuEe_ZS0r98VUds9lCWZmp5m2Q771eMjQ4y-2g0IsK81ifAb5kpxY84PK6mfkalTSyihdVDoejEBcYzc9XhAfA2-g_IFBbuyt-rSK8g3c3d4y4Lvb5qD4GLp0C3Bq-YiK_39KBAqSuOrc4HqAA8VHNm_vwLsKs9Mkxq4d9QgrPNQsC0iYWELjKB9o8BmRKHjyoI4u1gdoEo3z7OGNQkrKQokO6uvu0FdDI3xoBM8FoeA9J9l_jgQ_lPL0WGOqA4kl9p9yL03bSPshIr1kKxhYebzKzLzeToJSHBoMI6fGzKXQo6m-gv37WbzNaT7ukSXg_Os2y32qfF2rIngbZ6BWYeZ4_7PLWq3kq6HWEMnv2MOB6BFd2PwxoNeapil9jjtnKR2FK0ZJoePy_IpgNt_9IFD8BAOATtIwZFD0-uGkx3qzn9OiWXzXgpZ6Ql5tyHPtX0WUy8CgLj0J64G-dPZsaga_dw-CtaPJHxyeKbXVqXKiwIaqiyJaCeyA-VWOhudp5WeiprJZtO8iqCixEiwhEFEqRNQkfGBKzCtz_N9Ahk4JaH_gWClZaLyLzEJFeD1nav__DztB2KkL0lEaI-B2cJa8Zgg9U7W0JUPF47iqArPbRfdPF4EeV48b8yU4RyIyMCH_Qx_t9ReyYiYpLNEBKtTVw-vUk9PF7qJLHPVVwkanvR9iGVLiyWBND0Bg9EREhNX4hgHFEwExZrvSnZ9froxbJ_NrjVdvydrqgLnHbudhtSdMpV5nhSYsfbhj_IRfDvolFsBYBuUlxujDduIqRQ8labT2cRAStqzFo1L_CE7aztju_XLu-oCaCRJEz-N5ZDZhDPKIB2AVl3mwF6ht25fc7hJyOk3yU5kQQCwXGLhRRQrURJtA3Thjyw2RykNzpy0\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 8px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit Plantuml in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n                                <div class=\"vpascode-code-wrapper\">\r\n                    <pre class=\"language-plantuml\"><code class=\"language-plantuml\" data-language=\"plantuml\" class=\"language-plantuml\">@startuml \r\n\r\ntitle \u30db\u30c6\u30eb\u7ba1\u7406ERD\r\n\r\nhide circle\r\nleft to right direction\r\n\r\n' \u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3068\u5c5e\u6027\u3092\u5b9a\u7fa9\r\nentity \"\u9867\u5ba2\" as customer {\r\n  * customer_id : UUID &lt;&gt;\r\n  --\r\n  first_name : VARCHAR(50)\r\n  last_name : VARCHAR(50)\r\n  email : VARCHAR(100) &lt;&gt;\r\n  phone : VARCHAR(20)\r\n  address : TEXT\r\n  loyalty_points : INTEGER\r\n  total_stays : INTEGER\r\n  date_registered : TIMESTAMP\r\n  date_of_birth : DATE\r\n  nationality : VARCHAR(50)\r\n}\r\n\r\nentity \"\u90e8\u5c4b\" as room {\r\n  * room_id : UUID &lt;&gt;\r\n  --\r\n  room_number : VARCHAR(10) &lt;&gt;\r\n  floor_number : INTEGER\r\n  room_type_id : UUID &lt;&gt;\r\n  capacity : INTEGER\r\n  base_price : DECIMAL(10,2)\r\n  is_available : BOOLEAN\r\n  has_view : BOOLEAN\r\n  square_feet : INTEGER\r\n  last_renovated : DATE\r\n}\r\n\r\nentity \"\u90e8\u5c4b\u30bf\u30a4\u30d7\" as roomtype {\r\n  * room_type_id : UUID &lt;&gt;\r\n  --\r\n  type_name : VARCHAR(50) &lt;&gt;\r\n  description : TEXT\r\n  standard_capacity : INTEGER\r\n  base_price : DECIMAL(10,2)\r\n  extra_bed_charge : DECIMAL(10,2)\r\n  has_kitchenette : BOOLEAN\r\n  has_balcony : BOOLEAN\r\n}\r\n\r\nentity \"\u4e88\u7d04\" as reservation {\r\n  * reservation_id : UUID &lt;&gt;\r\n  --\r\n  customer_id : UUID &lt;&gt;\r\n  room_id : UUID &lt;&gt;\r\n  check_in_date : DATE\r\n  check_out_date : DATE\r\n  number_of_guests : INTEGER\r\n  total_amount : DECIMAL(10,2)\r\n  status : VARCHAR(20)\r\n  special_requests : TEXT\r\n  created_at : TIMESTAMP\r\n  updated_at : TIMESTAMP\r\n  confirmation_code : VARCHAR(20) &lt;&gt;\r\n}\r\n\r\nentity \"\u652f\u6255\u3044\" as payment {\r\n  * payment_id : UUID &lt;&gt;\r\n  --\r\n  reservation_id : UUID &lt;&gt;\r\n  amount : DECIMAL(10,2)\r\n  payment_date : TIMESTAMP\r\n  payment_method : VARCHAR(30)\r\n  transaction_id : VARCHAR(50) &lt;&gt;\r\n  status : VARCHAR(20)\r\n  receipt_url : TEXT\r\n  refund_amount : DECIMAL(10,2)\r\n}\r\n\r\nentity \"\u8acb\u6c42\u66f8\" as invoice {\r\n  * invoice_id : UUID &lt;&gt;\r\n  --\r\n  reservation_id : UUID &lt;&gt;\r\n  invoice_number : VARCHAR(20) &lt;&gt;\r\n  issued_date : DATE\r\n  due_date : DATE\r\n  subtotal : DECIMAL(10,2)\r\n  tax : DECIMAL(10,2)\r\n  service_charge : DECIMAL(10,2)\r\n  total_amount : DECIMAL(10,2)\r\n  status : VARCHAR(20)\r\n}\r\n\r\nentity \"\u30b9\u30bf\u30c3\u30d5\" as staff {\r\n  * staff_id : UUID &lt;&gt;\r\n  --\r\n  first_name : VARCHAR(50)\r\n  last_name : VARCHAR(50)\r\n  email : VARCHAR(100) &lt;&gt;\r\n  phone : VARCHAR(20)\r\n  role : VARCHAR(30)\r\n  hire_date : DATE\r\n  salary : DECIMAL(10,2)\r\n  shift_schedule : VARCHAR(50)\r\n  is_active : BOOLEAN\r\n}\r\n\r\nentity \"\u30eb\u30fc\u30e0\u30b5\u30fc\u30d3\u30b9\" as roomservice {\r\n  * service_id : UUID &lt;&gt;\r\n  --\r\n  reservation_id : UUID &lt;&gt;\r\n  staff_id : UUID &lt;&gt;\r\n  service_type : VARCHAR(50)\r\n  description : TEXT\r\n  request_time : TIMESTAMP\r\n  completion_time : TIMESTAMP\r\n  status : VARCHAR(20)\r\n  price : DECIMAL(10,2)\r\n}\r\n\r\n' \u95a2\u4fc2\u6027\r\ncustomer ||--o{ reservation : \"\u4f5c\u6210\u3059\u308b\"\r\nroom ||--o{ reservation : \"\u5272\u308a\u5f53\u3066\u3089\u308c\u308b\"\r\nreservation ||--|| payment : \"\u4fdd\u6709\u3059\u308b\"\r\nreservation ||--|| invoice : \"\u751f\u6210\u3059\u308b\"\r\nreservation ||--o{ roomservice : \"\u4f9d\u983c\u3059\u308b\"\r\nstaff ||--o{ roomservice : \"\u5bfe\u5fdc\u3059\u308b\"\r\nroomtype ||--o{ room : \"\u5206\u985e\u3059\u308b\"\r\n\r\n@enduml<\/code><\/pre>                <\/div>\r\n                <div class=\"vpascode-actions\">\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#plantuml:nPPRRzn45CVVLzhlOEK5YXef1F5I8TIbMK6afgt25l5cpTfdur5jZpipNhfgAX4RHGdXeUfLqBGq1T6YIgdAHGBK9XzckhlaMp0pliHUsqZaXPVLUlxdd9dvdNDcvYpZYFBGSursgztYcBjWYFY1Y3T5_7owlpUzkTbTNLAQWsqmB4mj5zej5mRSuCIWUCtXXeqfM1mJNzczPOZecOX_LI6Y7zBVZMVZbuycNpuLqQtn_dVJWv_RBV3bR2DZxcZlwNZ_oPo1c665Z1CFg76ztJACT_9l4zl66UFovUKbuuCFbJG_htu7c39k-iW3gNxMMJttIMVrxVSNJYdDHOqIU0YxXU5t5nPEfN43X_X5ZyN40zas1SQaqEj-tjFXoGYvV6G61FjS2SiNUjsFkwjAuuGZrvHSHpE2ZJYO5DOmuq11RQctlDBzjDTPkPJBP63sCUME59SwlQuQzv52Yrn5QsOpDnJm76Gi8Uzea9GGBuEe_ZS0r98VUds9lCWZmp5m2Q771eMjQ4y-2g0IsK81ifAb5kpxY84PK6mfkalTSyihdVDoejEBcYzc9XhAfA2-g_IFBbuyt-rSK8g3c3d4y4Lvb5qD4GLp0C3Bq-YiK_39KBAqSuOrc4HqAA8VHNm_vwLsKs9Mkxq4d9QgrPNQsC0iYWELjKB9o8BmRKHjyoI4u1gdoEo3z7OGNQkrKQokO6uvu0FdDI3xoBM8FoeA9J9l_jgQ_lPL0WGOqA4kl9p9yL03bSPshIr1kKxhYebzKzLzeToJSHBoMI6fGzKXQo6m-gv37WbzNaT7ukSXg_Os2y32qfF2rIngbZ6BWYeZ4_7PLWq3kq6HWEMnv2MOB6BFd2PwxoNeapil9jjtnKR2FK0ZJoePy_IpgNt_9IFD8BAOATtIwZFD0-uGkx3qzn9OiWXzXgpZ6Ql5tyHPtX0WUy8CgLj0J64G-dPZsaga_dw-CtaPJHxyeKbXVqXKiwIaqiyJaCeyA-VWOhudp5WeiprJZtO8iqCixEiwhEFEqRNQkfGBKzCtz_N9Ahk4JaH_gWClZaLyLzEJFeD1nav__DztB2KkL0lEaI-B2cJa8Zgg9U7W0JUPF47iqArPbRfdPF4EeV48b8yU4RyIyMCH_Qx_t9ReyYiYpLNEBKtTVw-vUk9PF7qJLHPVVwkanvR9iGVLiyWBND0Bg9EREhNX4hgHFEwExZrvSnZ9froxbJ_NrjVdvydrqgLnHbudhtSdMpV5nhSYsfbhj_IRfDvolFsBYBuUlxujDduIqRQ8labT2cRAStqzFo1L_CE7aztju_XLu-oCaCRJEz-N5ZDZhDPKIB2AVl3mwF6ht25fc7hJyOk3yU5kQQCwXGLhRRQrURJtA3Thjyw2RykNzpy0\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 6px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit Plantuml in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n            <\/div>\r\n            \n<\/p><\/div>\n<div class=\"vpascode-actions\">\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#plantuml:nPRVRzis4CVV3VX_8FAojLY0BCDUWcAe5nkhWQOj77VO6t6MJXOHYbJ9arklwV--8sKfaYKLQ5xs8eZy7dzzxex7rvx0KLLeCP_DPwH8etXZ2RMu0mDxBD2GM6sMGSrLYY9HBj4udsdCI90LJkrp4gboc92o9jZz99QOAOE2nofIwCLdHRa08gTs5Q6Vpw9o51UtbITReBiGu4LoQeYlyvaGBzksLAcu4Hy_hfVYrHz1khmCtqmvJz90WQp-lTZSlbbiVlxzwaNGD4nAM83IdUvVhwvUdEOjSskw8wxh4P2c3hrdORlwPnkdjqVGT9IbLOQ2i7wtNVsrsWIDB86MZFLu9gH0A1tkbITq68wqNT-jxhUBkm-jR3EvKuvXtOZbOhiA_GO2Lz21rzbXlWNQ3SgDjKN4wFYdGHZ-9_15oLJ5Ze5tQJGmCcsjUpBe72IEf6E9WvaJA26fDzgntu57MJgL1BRBrUtwRl6M5_hbEj9LNiA1NG8x7VG_txz_krgy2qeENXuKVkxt-ayLE9GP8lMNYJvtQEo1IQOjmG6aBU-y1HMEqOCrUgwQM9I6GNMoIT4dJfN1MPr8uJWmARXKFWSDVY47SeSyEWUt7xK9a1uK9JaQ91eXk0ETM7Fi2dqawD4TOf3LL9xQBPYdhWaqawaw6e2ysUH1AYD3p7T2lUwt5PqBTHI6xDXNwCSp3WfR6Hf3n3wWoW_psfUOA1xfy5CpQ-Esn6488WbqdgPLcKueJ9clfAB6bDZqx2Q9P--H_m37SBr6wcNztn0_DQTIzpl-cCRGp7bYszjxenL8kKqx6_-jHiLnQ3maJoiEut-ACXS6vBIGbTCTm0wpogIJJkjnMfk3vGo9d5Jztt0wDP_1gHavk06lsnCfxolsz5aifXMUT_bg5sDmZ3h1bz6Ov8s5vQSJ-tbHtGDtJv1b4PiFVmsqsFY_Ywgp6eTnblCxOa0NDBZZA89SPIGzNnjffKTs5KeBn-m1foy_lfxkQrUq9U7acfRMoLC_7cBZd9lvOkKPR7cyYfnkA4cgmE6rKvGQumR6vAcqd2Wwt-e7t0PrF1CJBlcvrhxC7XylB-tNNesu4HS5FA2_cC_YosFS1BnNUyDbcMmmx8Z1_l6nlG3PbglMk4sJ_6opvtBdE4x6BCFg7J-oTNF3it6T2UDcMQKpfNLpbEYXZcKmINZDlNNgtxZoVFOQJSglv_y0\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 6px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>VPasCode\u3067PlantUML\u3092\u7de8\u96c6<\/span><br \/>\n<\/a>\n<\/div>\n<\/div>\n<p id=\"ANJCSUi\"><img alt=\"Editing a ERD in Visual Paradigm VPasCode\" class=\"alignnone wp-image-2662 size-full\" decoding=\"async\" height=\"856\" sizes=\"(max-width: 1311px) 100vw, 1311px\" src=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/08\/img_6a83ff8445766.png\" srcset=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/08\/img_6a83ff8445766.png 1311w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/08\/img_6a83ff8445766-300x196.png 300w, 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