{"id":264,"date":"2020-07-16T06:06:00","date_gmt":"2020-07-16T06:06:00","guid":{"rendered":"http:\/\/www.goncalo.pt\/por\/?p=264"},"modified":"2023-10-07T03:31:58","modified_gmt":"2023-10-07T03:31:58","slug":"2020-07-16-testando-o-sqlite-para-possiveis-usos-no-futuro-programa-de-testes-de-sistemas-de-trading-em-c","status":"publish","type":"post","link":"https:\/\/www.goncalo.pt\/por\/2020\/07\/16\/2020-07-16-testando-o-sqlite-para-possiveis-usos-no-futuro-programa-de-testes-de-sistemas-de-trading-em-c\/","title":{"rendered":"2020-07-16 &#8211; Testando o SQLite para poss\u00edveis usos no futuro programa de testes de Sistemas de Trading em C++"},"content":{"rendered":"\n<p>Umas experi\u00eancias com o SQLite, a sondar coisas necess\u00e1rias no Futuro, no dia 16 de Julho.<br><br>Explicado na descri\u00e7\u00e3o da altura, abaixo:<br><br>\u00ab2020-07-16 &#8211; Umas experi\u00eancias com a BD SQLite, isto porque, um dos projectos que tenho para o Futuro \u00e9 a cria\u00e7\u00e3o de um sistema de testes de sistemas de trading (para optimiza\u00e7\u00e3o de par\u00e2metros e testar a sua efic\u00e1cia em muitos activos financeiros), e ao inv\u00e9s de ir ler milh\u00f5es de registos a uma BD mais poderosas como MySQL\/MariaDB, vou come\u00e7ar a usar a SQLite e hei-de testar como se porta com tanto registo.<br><br>Isto porque quero come\u00e7ar tamb\u00e9m a criar aplica\u00e7\u00f5es que giram bases de dados locais (tipo SQLite) e n\u00e3o dependentes de liga\u00e7\u00f5es \u00e0 rede.<br><br>Um dos projectos passar\u00e1 por ser um browser de registos SQLite, onde uma pessoa poder\u00e1 ler, gravar, inserir, modificar, etc, tabelas e registos ao seu gosto e criar a sua pr\u00f3pria base de dados, como se fosse uma Intranet, mas port\u00e1til e offline.<br><br>Acho que \u00e9 melhor assim do que fazer depender as pessoas de coisas online.<br><br>Assim, desisto no Futuro do projecto da Intranet em PHP, e crio \u00e9 uma aplica\u00e7\u00e3o em C++ que crie tabelas, insira registos, etc, etc, numa base de dados local, um software ao inv\u00e9s de uma p\u00e1gina.<br><br>Isto, mais os sistemas de trading, e outras coisas, fazem com que me interesse pelo SQLite.<br><br>Para testes r\u00e1pidos, como o Python \u00e9 100 vezes mais f\u00e1cil que o C++, e eu tinha de criar algo em Python relacionado com BDs, por me ter sido pedido, usei esta experi\u00eancia para testar a BD.<br><br>N\u00e3o tem todos os tipos de campos que o MySQL tem, e tem certas particularidades, n\u00e3o aceita alter tables dinamicamente, entre outras coisas, mas achei espectacular, vou us\u00e1-la no Futuro.<br><br>Quando usar a SQLite com milh\u00f5es de rows e milh\u00f5es de opera\u00e7\u00f5es por hora, o dia todo, logo conto como se aguenta, quando come\u00e7ar a trabalhar com sistemas de trading novamente.\u00bb<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Umas experi\u00eancias com o SQLite, a sondar coisas necess\u00e1rias no Futuro, no dia 16 de Julho. Explicado na descri\u00e7\u00e3o da<\/p>\n","protected":false},"author":1,"featured_media":265,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,3,98,4,97],"tags":[102,107,104,7,207,105,10,103,106,100,99,101],"class_list":["post-264","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-programacao","category-projectos","category-sistemas-de-trading","category-softwares","category-trading","tag-back-testing","tag-bases-de-dados","tag-bolsa","tag-c","tag-dev","tag-forex","tag-linux","tag-sistemas-de-trading","tag-sistemas-de-trading-mecanicos","tag-sql","tag-sqlite","tag-trading-systems"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>2020-07-16 - Testando o SQLite para poss\u00edveis usos no futuro programa de testes de Sistemas de Trading em C++ - Gon\u00e7alo Ferreira<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.goncalo.pt\/por\/2020\/07\/16\/2020-07-16-testando-o-sqlite-para-possiveis-usos-no-futuro-programa-de-testes-de-sistemas-de-trading-em-c\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"2020-07-16 - Testando o SQLite para poss\u00edveis usos no futuro programa de testes de Sistemas de Trading em C++ - Gon\u00e7alo Ferreira\" \/>\n<meta property=\"og:description\" content=\"Umas experi\u00eancias com o SQLite, a sondar coisas necess\u00e1rias no Futuro, no dia 16 de Julho. 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