{"id":6619,"date":"2026-04-13T11:50:34","date_gmt":"2026-04-13T11:50:34","guid":{"rendered":"http:\/\/the-codest.localhost\/dictionary\/lookup-table\/"},"modified":"2026-04-13T11:50:50","modified_gmt":"2026-04-13T11:50:50","slug":"tableau-de-consultation","status":"publish","type":"dictionary","link":"https:\/\/thecodest.co\/fr\/dictionary\/lookup-table\/","title":{"rendered":"Tableau de consultation"},"content":{"rendered":"

D\u00e9finition de la table de recherche<\/h1>\n

Un tableau de consultation, \u00e9galement connu sous le nom de hachage<\/a> ou tableau associatif, est un donn\u00e9es<\/a> structure qui stocke une collection de paires cl\u00e9-valeur. Elle est utilis\u00e9e pour mettre en correspondance un ensemble de cl\u00e9s avec leurs valeurs correspondantes, ce qui permet d'extraire efficacement des donn\u00e9es sur la base d'une cl\u00e9 donn\u00e9e.<\/p>\n

La table de recherche se compose de deux parties principales : la cl\u00e9 et la valeur. La cl\u00e9 est utilis\u00e9e pour identifier les donn\u00e9es, tandis que la valeur est la donn\u00e9e elle-m\u00eame. Les paires cl\u00e9-valeur sont stock\u00e9es dans un tableau, o\u00f9 chaque cl\u00e9 est associ\u00e9e \u00e0 la valeur correspondante. Les cl\u00e9s et les valeurs peuvent \u00eatre de n'importe quel type, comme des entiers, des cha\u00eenes de caract\u00e8res ou des objets.<\/p>\n

L'un des principaux avantages de l'utilisation d'une table de recherche est sa rapidit\u00e9 et son efficacit\u00e9. Elle permet d'acc\u00e9der aux donn\u00e9es en temps constant, quelle que soit la taille de l'ensemble de donn\u00e9es. En effet, la table de recherche utilise une fonction de hachage pour faire correspondre chaque cl\u00e9 \u00e0 un index unique dans le tableau, ce qui rend la r\u00e9cup\u00e9ration des donn\u00e9es tr\u00e8s rapide.<\/p>\n

Les tables de consultation sont couramment utilis\u00e9es dans la programmation informatique pour des t\u00e2ches telles que la mise en cache, l'indexation et la recherche. Elles sont \u00e9galement utilis\u00e9es dans les bases de donn\u00e9es pour am\u00e9liorer les performances des requ\u00eates en cr\u00e9ant des index sur les colonnes fr\u00e9quemment interrog\u00e9es.<\/p>\n

D'une mani\u00e8re g\u00e9n\u00e9rale, les tables de consultation constituent une structure de donn\u00e9es essentielle en informatique et sont largement utilis\u00e9es dans de nombreuses applications. Elles constituent un moyen rapide et efficace de stocker et d'extraire des donn\u00e9es, ce qui en fait un outil indispensable pour les programmeurs et les d\u00e9veloppeurs.<\/p>","protected":false},"excerpt":{"rendered":"

D\u00e9couvrez les tables de consultation, une structure de donn\u00e9es utilis\u00e9e pour associer des cl\u00e9s \u00e0 des valeurs en vue d'une recherche efficace. Largement utilis\u00e9es en programmation et dans les bases de donn\u00e9es. #gestion des donn\u00e9es<\/p>","protected":false},"template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-6619","dictionary","type-dictionary","status-publish","hentry"],"acf":[],"yoast_head":"\nLookup Table - The Codest<\/title>\n<meta name=\"description\" content=\"Learn about lookup tables, a data structure used to map keys to values for efficient retrieval. Widely used in programming and databases. #datamanagement\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/thecodest.co\/fr\/dictionnaire\/tableau-de-consultation\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Lookup Table\" \/>\n<meta property=\"og:description\" content=\"Learn about lookup tables, a data structure used to map keys to values for efficient retrieval. Widely used in programming and databases. #datamanagement\" \/>\n<meta property=\"og:url\" content=\"https:\/\/thecodest.co\/fr\/dictionnaire\/tableau-de-consultation\/\" \/>\n<meta property=\"og:site_name\" content=\"The Codest\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-13T11:50:50+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/thecodest.co\/app\/uploads\/2024\/06\/cover-image.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"675\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/thecodest.co\\\/dictionary\\\/lookup-table\\\/\",\"url\":\"https:\\\/\\\/thecodest.co\\\/dictionary\\\/lookup-table\\\/\",\"name\":\"Lookup Table - The Codest\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/thecodest.co\\\/#website\"},\"datePublished\":\"2026-04-13T11:50:34+00:00\",\"dateModified\":\"2026-04-13T11:50:50+00:00\",\"description\":\"Learn about lookup tables, a data structure used to map keys to values for efficient retrieval. Widely used in programming and databases. #datamanagement\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/thecodest.co\\\/dictionary\\\/lookup-table\\\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/thecodest.co\\\/dictionary\\\/lookup-table\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/thecodest.co\\\/dictionary\\\/lookup-table\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/thecodest.co\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Dictionary\",\"item\":\"https:\\\/\\\/thecodest.co\\\/sv\\\/ordbok\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Lookup Table\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/thecodest.co\\\/#website\",\"url\":\"https:\\\/\\\/thecodest.co\\\/\",\"name\":\"The Codest\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/thecodest.co\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/thecodest.co\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/thecodest.co\\\/#organization\",\"name\":\"The Codest\",\"url\":\"https:\\\/\\\/thecodest.co\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\\\/\\\/thecodest.co\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/thecodest.co\\\/app\\\/uploads\\\/2024\\\/03\\\/thecodest-logo.svg\",\"contentUrl\":\"https:\\\/\\\/thecodest.co\\\/app\\\/uploads\\\/2024\\\/03\\\/thecodest-logo.svg\",\"width\":144,\"height\":36,\"caption\":\"The Codest\"},\"image\":{\"@id\":\"https:\\\/\\\/thecodest.co\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/pl.linkedin.com\\\/company\\\/codest\",\"https:\\\/\\\/clutch.co\\\/profile\\\/codest\"]}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Tableau de consultation - The Codest","description":"D\u00e9couvrez les tables de consultation, une structure de donn\u00e9es utilis\u00e9e pour associer des cl\u00e9s \u00e0 des valeurs en vue d'une recherche efficace. Largement utilis\u00e9es en programmation et dans les bases de donn\u00e9es. #gestion des donn\u00e9es","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/thecodest.co\/fr\/dictionnaire\/tableau-de-consultation\/","og_locale":"fr_FR","og_type":"article","og_title":"Lookup Table","og_description":"Learn about lookup tables, a data structure used to map keys to values for efficient retrieval. Widely used in programming and databases. #datamanagement","og_url":"https:\/\/thecodest.co\/fr\/dictionnaire\/tableau-de-consultation\/","og_site_name":"The Codest","article_modified_time":"2026-04-13T11:50:50+00:00","og_image":[{"width":1200,"height":675,"url":"https:\/\/thecodest.co\/app\/uploads\/2024\/06\/cover-image.png","type":"image\/png"}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/thecodest.co\/dictionary\/lookup-table\/","url":"https:\/\/thecodest.co\/dictionary\/lookup-table\/","name":"Tableau de consultation - The Codest","isPartOf":{"@id":"https:\/\/thecodest.co\/#website"},"datePublished":"2026-04-13T11:50:34+00:00","dateModified":"2026-04-13T11:50:50+00:00","description":"D\u00e9couvrez les tables de consultation, une structure de donn\u00e9es utilis\u00e9e pour associer des cl\u00e9s \u00e0 des valeurs en vue d'une recherche efficace. Largement utilis\u00e9es en programmation et dans les bases de donn\u00e9es. #gestion des donn\u00e9es","breadcrumb":{"@id":"https:\/\/thecodest.co\/dictionary\/lookup-table\/#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/thecodest.co\/dictionary\/lookup-table\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/thecodest.co\/dictionary\/lookup-table\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/thecodest.co\/"},{"@type":"ListItem","position":2,"name":"Dictionary","item":"https:\/\/thecodest.co\/sv\/ordbok\/"},{"@type":"ListItem","position":3,"name":"Lookup Table"}]},{"@type":"WebSite","@id":"https:\/\/thecodest.co\/#website","url":"https:\/\/thecodest.co\/","name":"The Codest","description":"","publisher":{"@id":"https:\/\/thecodest.co\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/thecodest.co\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"},{"@type":"Organization","@id":"https:\/\/thecodest.co\/#organization","name":"The Codest","url":"https:\/\/thecodest.co\/","logo":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/thecodest.co\/#\/schema\/logo\/image\/","url":"https:\/\/thecodest.co\/app\/uploads\/2024\/03\/thecodest-logo.svg","contentUrl":"https:\/\/thecodest.co\/app\/uploads\/2024\/03\/thecodest-logo.svg","width":144,"height":36,"caption":"The Codest"},"image":{"@id":"https:\/\/thecodest.co\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/pl.linkedin.com\/company\/codest","https:\/\/clutch.co\/profile\/codest"]}]}},"_links":{"self":[{"href":"https:\/\/thecodest.co\/fr\/wp-json\/wp\/v2\/dictionary\/6619","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/thecodest.co\/fr\/wp-json\/wp\/v2\/dictionary"}],"about":[{"href":"https:\/\/thecodest.co\/fr\/wp-json\/wp\/v2\/types\/dictionary"}],"version-history":[{"count":1,"href":"https:\/\/thecodest.co\/fr\/wp-json\/wp\/v2\/dictionary\/6619\/revisions"}],"predecessor-version":[{"id":10998,"href":"https:\/\/thecodest.co\/fr\/wp-json\/wp\/v2\/dictionary\/6619\/revisions\/10998"}],"wp:attachment":[{"href":"https:\/\/thecodest.co\/fr\/wp-json\/wp\/v2\/media?parent=6619"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}