{"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":"tabela-de-consulta","status":"publish","type":"dictionary","link":"https:\/\/thecodest.co\/pt\/dictionary\/lookup-table\/","title":{"rendered":"Tabela de pesquisa"},"content":{"rendered":"<h1>Defini\u00e7\u00e3o de tabela de pesquisa<\/h1>\n<p>Uma tabela de pesquisa, tamb\u00e9m conhecida como <a href=\"https:\/\/thecodest.co\/pt\/blog\/hash-to-use-or-not-to-use\/\">haxixe<\/a> tabela ou matriz associativa, \u00e9 um <a href=\"https:\/\/thecodest.co\/pt\/blog\/app-data-collection-security-risks-value-and-types-explored\/\">dados<\/a> estrutura que armazena uma cole\u00e7\u00e3o de pares chave-valor. \u00c9 utilizada para mapear um conjunto de chaves para os seus valores correspondentes, permitindo a recupera\u00e7\u00e3o eficiente de dados com base numa determinada chave.<\/p>\n<p>A tabela de pesquisa \u00e9 constitu\u00edda por duas partes principais: a chave e o valor. A chave \u00e9 utilizada para identificar os dados, enquanto o valor \u00e9 o pr\u00f3prio dado. Os pares chave-valor s\u00e3o armazenados numa matriz, em que cada chave est\u00e1 associada ao seu valor correspondente. As chaves e os valores podem ser de qualquer tipo de dados, como n\u00fameros inteiros, cadeias de caracteres ou objectos.<\/p>\n<p>Uma das principais vantagens da utiliza\u00e7\u00e3o de uma tabela de pesquisa \u00e9 a sua rapidez e efici\u00eancia. Permite o acesso aos dados em tempo constante, independentemente do tamanho do conjunto de dados. Isto deve-se ao facto de a tabela de pesquisa utilizar uma fun\u00e7\u00e3o de hash para mapear cada chave para um \u00edndice \u00fanico na matriz, o que torna a recupera\u00e7\u00e3o de dados muito r\u00e1pida.<\/p>\n<p>As tabelas de pesquisa s\u00e3o normalmente utilizadas na programa\u00e7\u00e3o inform\u00e1tica para tarefas como o armazenamento em cache, a indexa\u00e7\u00e3o e a pesquisa. S\u00e3o tamb\u00e9m utilizadas em bases de dados para melhorar o desempenho das consultas atrav\u00e9s da cria\u00e7\u00e3o de \u00edndices em colunas frequentemente consultadas.<\/p>\n<p>De um modo geral, as tabelas de pesquisa s\u00e3o uma estrutura de dados essencial na inform\u00e1tica e s\u00e3o amplamente utilizadas em muitas aplica\u00e7\u00f5es diferentes. Proporcionam uma forma r\u00e1pida e eficiente de armazenar e recuperar dados, o que as torna uma ferramenta indispens\u00e1vel para programadores e programadoras.<\/p>","protected":false},"excerpt":{"rendered":"<p>Saiba mais sobre tabelas de pesquisa, uma estrutura de dados utilizada para mapear chaves para valores para uma recupera\u00e7\u00e3o eficiente. Muito utilizada em programa\u00e7\u00e3o e bases de dados. #gest\u00e3o de dados<\/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":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Lookup 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. 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Muito utilizada em programa\u00e7\u00e3o e bases de dados. #gest\u00e3o de dados","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\/pt\/dicionario\/tabela-de-consulta\/","og_locale":"pt_PT","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. 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