
{"id":5841,"date":"2018-02-22T09:23:57","date_gmt":"2018-02-22T14:23:57","guid":{"rendered":"http:\/\/consortechsite.wpengine.com\/?p=5841"},"modified":"2020-03-13T13:43:15","modified_gmt":"2020-03-13T17:43:15","slug":"elements-a-considere-avant-de-lancer-un-projet-etl","status":"publish","type":"post","link":"https:\/\/www.consortech.com\/fr\/elements-a-considere-avant-de-lancer-un-projet-etl\/","title":{"rendered":"\u00c9l\u00e9ments \u00e0 consid\u00e9rer avant de lancer un projet ETL"},"content":{"rendered":"\t\t<div class=\"et_pb_section et_pb_with_background et_section_regular breadcrumbs_section\">\n\t\t\t<div class=\" et_pb_row breadcrumbs_row\">\n\t\t\t\t<div class=\"et_pb_column et_pb_column_4_4 breadcrumbs_column\">\n\t\t\t\t\t<div class=\"et_pb_code et_pb_module breadcrumbs_module\">\n\t\t\t\t\t\t<span><span><a href=\"https:\/\/www.consortech.com\/fr\/\">Accueil<\/a><\/span><\/span>\t\t\t\t\t<\/div> <!-- .et_pb_code -->\n\t\t\t\t<\/div> <!-- .et_pb_column -->\n\t\t\t<\/div> <!-- .et_pb_row -->\n\t\t<\/div>\n\t\t<p>[et_pb_section bb_built=\u00a0\u00bb1&Prime;][et_pb_row][et_pb_column type=\u00a0\u00bb4_4&Prime;][et_pb_text _builder_version=\u00a0\u00bb3.0.106&Prime; background_layout=\u00a0\u00bblight\u00a0\u00bb]<\/p>\n<p>Chaque projet ETL comporte son lot de d\u00e9fis. Que ce soit la complexit\u00e9 ou l\u2019envergure (ou encore les deux!), il est tr\u00e8s important de consid\u00e9rer les diff\u00e9rents aspects du projet avant de s\u2019y lancer. L\u2019ayant fait \u00e0 maintes reprises, nos experts peuvent partager avec vous leurs connaissances reli\u00e9es \u00e0 l\u2019\u00e9valuation des projets ETL.<\/p>\n<h2><strong>Les facteurs cl\u00e9s \u00e0 consid\u00e9rer<\/strong><\/h2>\n<p>Voici une liste de facteurs qualitatifs et quantitatifs qui influencent le co\u00fbt et la dur\u00e9e d\u2019un projet ETL.<\/p>\n<ol>\n<li><strong>Le nombre de syst\u00e8mes \u00e0 la source et \u00e0 la destination.<\/strong> Travaillerez-vous sur une ou plusieurs bases de donn\u00e9es? Devrez-vous traiter diff\u00e9rents types de fichiers (<em>Excel, Shapefile, File Geodatabase, AutoCAD, KML, PDF, etc.)?<\/em> La quantit\u00e9 de formats et de syst\u00e8mes devra \u00eatre prise en compte dans l\u2019\u00e9valuation de l\u2019effort \u00e0 fournir.<\/li>\n<li><strong>La quantit\u00e9 de transformations \u00e0 r\u00e9aliser et leur complexit\u00e9.<\/strong> Pour \u00e9valuer des processus complexes, il est pertinent de les diviser en plusieurs \u00e9tapes plus faciles \u00e0 cerner. Avant de lancer votre projet ETL, listez les probl\u00e8mes \u00e0 r\u00e9soudre et divisez-les en morceaux afin de planifier le travail de fa\u00e7on modulaire.<\/li>\n<li><strong>La qualit\u00e9 de la documentation des fichiers sources.<\/strong> \u00c0 quel point connaissez-vous les donn\u00e9es sur lesquelles vous allez travailler? Si vous n\u2019\u00eates pas familier avec celles-ci et que la documentation disponible est limit\u00e9e, il faudra planifier du temps pour analyser et comprendre les donn\u00e9es.<\/li>\n<li><strong>La pr\u00e9cision des requis techniques.<\/strong> Est-ce que les objectifs du mandat sont d\u00e9finis de fa\u00e7on sommaire ou pr\u00e9cise? \u00c9valuer une t\u00e2che d\u00e9crite \u00e0 un haut niveau comporte \u00e9videmment une plus grande marge d\u2019erreur.<\/li>\n<li><strong>L\u2019aisance et les connaissances de l\u2019\u00e9quipe sur les donn\u00e9es \u00e0 traiter.<\/strong> Poss\u00e9dez-vous les comp\u00e9tences n\u00e9cessaires pour accomplir le mandat? Si le projet exige de travailler avec des donn\u00e9es AutoCAD et que votre \u00e9quipe n\u2019est pas famili\u00e8re avec le logiciel, il sera judicieux d\u2019envisager une formation.<\/li>\n<li><strong>La qualit\u00e9 des donn\u00e9es \u00e0 la source.<\/strong> Vous connaissez l\u2019expression \u00ab\u00a0g<em>arbage in = garbage out\u00a0\u00bb<\/em>? Quand les donn\u00e9es initiales ne sont pas fiables, vous n\u2019obtiendrez pas les r\u00e9sultats souhait\u00e9s et ferez face \u00e0 des probl\u00e8mes inattendus. Il vous faut donc \u00e9valuer la qualit\u00e9 des donn\u00e9es et, au besoin, pr\u00e9voir du temps pour les nettoyer.<\/li>\n<li><strong>Le volume et le niveau de performance n\u00e9cessaire. <\/strong>Plus il y a de donn\u00e9es, plus l\u2019enjeu de performance est grand. Pr\u00e9voyez du temps pour un test de charge, car lancer un processus ETL sur 100 objets est tr\u00e8s diff\u00e9rent que le faire sur 1 000 000 objets.<\/li>\n<li><strong>Le niveau d\u2019effort \u00e0 d\u00e9ployer en gestion de projet et en suivi.<\/strong> R\u00e9aliser un projet ETL comporte de nombreuses interactions avec le client et les membres de l\u2019\u00e9quipe. Bien g\u00e9rer les communications et l\u2019avancement des diff\u00e9rentes \u00e9tapes est donc important pour le succ\u00e8s du mandat. De plus, assurez-vous de disposer de suffisamment de temps pour des t\u00e2ches comme la livraison, le transfert de connaissances et la gestion de projet.<\/li>\n<\/ol>\n<h2><strong>Une \u00e9quipe d\u00e9di\u00e9e pour un projet r\u00e9ussi<\/strong><\/h2>\n<p>L\u2019implication de tous est importante pour le succ\u00e8s du projet, et ce, autant dans l\u2019\u00e9quipe de d\u00e9veloppement que du c\u00f4t\u00e9 client. Quand tous les joueurs sont orient\u00e9s vers les m\u00eames objectifs et priorisent l\u2019octroi des ressources pour faire progresser le projet, les \u00e9tapes s\u2019encha\u00eenent efficacement et les probl\u00e8mes se r\u00e9solvent rapidement. Cette v\u00e9locit\u00e9 permet l\u2019atteinte de meilleurs r\u00e9sultats et augmente les chances de respecter l\u2019\u00e9ch\u00e9ancier.<\/p>\n<p>&nbsp;<\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=\u00a0\u00bb3.0.106&Prime;][et_pb_column type=\u00a0\u00bb4_4&Prime;][et_pb_cta _builder_version=\u00a0\u00bb3.0.106&Prime; button_text=\u00a0\u00bbFaites appel \u00e0 nous!\u00a0\u00bb button_url=\u00a0\u00bbhttps:\/\/consortech.com\/fr\/contact\/\u00a0\u00bb url_new_window=\u00a0\u00bboff\u00a0\u00bb background_color=\u00a0\u00bb#1e3166&Prime; use_background_color=\u00a0\u00bbon\u00a0\u00bb background_layout=\u00a0\u00bbdark\u00a0\u00bb custom_button=\u00a0\u00bboff\u00a0\u00bb button_icon_placement=\u00a0\u00bbright\u00a0\u00bb body_font=\u00a0\u00bb|600|||||||\u00a0\u00bb body_font_size=\u00a0\u00bb22&Prime; custom_padding=\u00a0\u00bb||20px|\u00a0\u00bb]<\/p>\n<p style=\"text-align: center;\">Vous envisagez un projet ETL prochainement? Peu importe son envergure et sa complexit\u00e9, Consortech poss\u00e8de l\u2019expertise et les m\u00e9thodes pour en faire un succ\u00e8s.<\/p>\n<p>[\/et_pb_cta][\/et_pb_column][\/et_pb_row][et_pb_row][et_pb_column type=\u00a0\u00bb4_4&Prime;][et_pb_divider _builder_version=\u00a0\u00bb3.0.106&Prime; show_divider=\u00a0\u00bbon\u00a0\u00bb height=\u00a0\u00bb50px\u00a0\u00bb \/][\/et_pb_column][\/et_pb_row][et_pb_row][et_pb_column type=\u00a0\u00bb4_4&Prime;][et_pb_text _builder_version=\u00a0\u00bb3.0.106&Prime; background_layout=\u00a0\u00bblight\u00a0\u00bb]<\/p>\n<h2><strong>Vous aimerez aussi :\u00a0<\/strong><\/h2>\n<p>&nbsp;<\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row][et_pb_column type=\u00a0\u00bb1_2&Prime;][et_pb_text _builder_version=\u00a0\u00bb3.0.106&Prime; background_layout=\u00a0\u00bblight\u00a0\u00bb]<\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"Mi1pQ1G511\"><p><a href=\"https:\/\/consortech.com\/fr\/4-pieges-a-eviter-pour-reussir-prochain-projet-automatisation-de-donnees\/\">4 pi\u00e8ges \u00e0 \u00e9viter pour r\u00e9ussir votre prochain projet d\u2019automatisation de donn\u00e9es<\/a><\/p><\/blockquote>\n<p><iframe loading=\"lazy\" title=\"\u00ab\u00a04 pi\u00e8ges \u00e0 \u00e9viter pour r\u00e9ussir votre prochain projet d\u2019automatisation de donn\u00e9es\u00a0\u00bb &#8212; Consortech\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" src=\"https:\/\/consortech.com\/fr\/4-pieges-a-eviter-pour-reussir-prochain-projet-automatisation-de-donnees\/embed\/#?secret=Mi1pQ1G511\" data-secret=\"Mi1pQ1G511\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n<p>[\/et_pb_text][\/et_pb_column][et_pb_column type=\u00a0\u00bb1_2&Prime;][et_pb_text _builder_version=\u00a0\u00bb3.0.106&Prime; background_layout=\u00a0\u00bblight\u00a0\u00bb]<\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"qhVFwVmDbz\"><p><a href=\"https:\/\/consortech.com\/fr\/5-facteurs-grimper-facture-projets-etl\/\">5 facteurs qui font grimper la facture des projets ETL<\/a><\/p><\/blockquote>\n<p><iframe loading=\"lazy\" title=\"\u00ab\u00a05 facteurs qui font grimper la facture des projets ETL\u00a0\u00bb &#8212; Consortech\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" src=\"https:\/\/consortech.com\/fr\/5-facteurs-grimper-facture-projets-etl\/embed\/#?secret=qhVFwVmDbz\" data-secret=\"qhVFwVmDbz\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Chaque projet ETL comporte son lot de d\u00e9fis. Que ce soit la complexit\u00e9 ou l\u2019envergure, il est tr\u00e8s important de consid\u00e9rer les diff\u00e9rents aspects du projet avant de s\u2019y&#8230;<\/p>\n","protected":false},"author":6,"featured_media":5838,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[52],"tags":[],"class_list":["post-5841","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tendances"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u00c9l\u00e9ments \u00e0 consid\u00e9rer avant de lancer un projet ETL | Consortech<\/title>\n<meta name=\"description\" content=\"Chaque projet ETL comporte son lot de d\u00e9fis. Que ce soit la complexit\u00e9 ou l\u2019envergure (ou encore les deux!), il est tr\u00e8s important de consid\u00e9rer les diff\u00e9rents aspects du projet avant de s\u2019y lancer. Dans cet article, nos experts vous donnent des pistes pour mieux \u00e9valuer vos projets ETL.\" \/>\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.consortech.com\/fr\/elements-a-considere-avant-de-lancer-un-projet-etl\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u00c9l\u00e9ments \u00e0 consid\u00e9rer avant de lancer un projet ETL | Consortech\" \/>\n<meta property=\"og:description\" content=\"Chaque projet ETL comporte son lot de d\u00e9fis. 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