{"id":49549,"date":"2008-06-25T06:32:45","date_gmt":"2008-06-25T03:32:45","guid":{"rendered":"https:\/\/www.altoros.com\/blog\/?p=49549"},"modified":"2021-10-19T07:09:15","modified_gmt":"2021-10-19T04:09:15","slug":"making-an-etl-of-your-own-wise-or-not","status":"publish","type":"post","link":"https:\/\/www.altoros.com\/blog\/making-an-etl-of-your-own-wise-or-not\/","title":{"rendered":"Making an ETL of Your Own\u2014Wise or Not?"},"content":{"rendered":"<p><center><small>(<a href=\"http:\/\/citeseerx.ist.psu.edu\/viewdoc\/download?doi=10.1.1.98.8661&#038;rep=rep1&#038;type=pdf\" rel=\"noopener noreferrer\" target=\"_blank\">Featured image credit<\/a>)<\/small><\/center><\/p>\n<p>&nbsp;<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_79_2 counter-hierarchy ez-toc-counter ez-toc-transparent ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.altoros.com\/blog\/making-an-etl-of-your-own-wise-or-not\/#The_ETL%E2%80%93migration_puzzle\" >The ETL\u2013migration puzzle<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.altoros.com\/blog\/making-an-etl-of-your-own-wise-or-not\/#A_homegrown_tool_vs_proprietary_product\" >A homegrown tool vs. proprietary product<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.altoros.com\/blog\/making-an-etl-of-your-own-wise-or-not\/#Further_reading\" >Further reading<\/a><\/li><\/ul><\/nav><\/div>\n<h3><span class=\"ez-toc-section\" id=\"The_ETL%E2%80%93migration_puzzle\"><\/span>The ETL\u2013migration puzzle<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Before jumping into anything or rushing to a popular software vendor, many integration experts analyze the degree to which an out-of-the-box ETL tool will benefit their company or whether it might be wiser to build a custom product from scratch. At the same time, some people confuse ETL with data migration.<\/p>\n<div id=\"attachment_62425\" style=\"width: 160px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.altoros.com\/blog\/wp-content\/uploads\/2008\/06\/John-Morris.jpg\"><img decoding=\"async\" aria-describedby=\"caption-attachment-62425\" src=\"https:\/\/www.altoros.com\/blog\/wp-content\/uploads\/2008\/06\/John-Morris.jpg\" width=\"150\" class=\"size-thumbnail wp-image-62425\" \/><\/a><p id=\"caption-attachment-62425\" class=\"wp-caption-text\"><small>John Morris<\/small><\/p><\/div>\n<p><a href=\"https:\/\/www.linkedin.com\/in\/johnymorris\/\" rel=\"noopener noreferrer\" target=\"_blank\">John Morris\u2019s<\/a> latest <a href=\"https:\/\/www.bcs.org\/server.php?show=ConBlogEntry.499\" onclick=\"javascript:urchinTracker('\/outbound\/www.bcs.org\/server.php?show=ConBlogEntry.499?ref=\/page\/24');\">post<\/a>, where he highlights the difference between data migration and ETL is, in fact, very much to the point. ETL is a much larger concept that needs more effort and time than data migration. Data migration, if properly defined, is a one-way long-term trip of data from one system to another. While ETL not only can be a repeated procedure, but is also much larger in scope, as it includes all sorts of data transformations (from data cleansing and data quality checking to certain elements of business intelligence).<\/p>\n<p>So, if you look closely, the two are considerably different, not even parts of the same process. (Still, the <a href=\"https:\/\/www.crn.com.au\/feature\/rules-of-successful-data-migration-115013\" rel=\"noopener noreferrer\" target=\"_blank\">4 rules of data migration<\/a> coathored by John are relevant to ETL, as well.)<\/p>\n<p>&nbsp;<\/p>\n<h3><span class=\"ez-toc-section\" id=\"A_homegrown_tool_vs_proprietary_product\"><\/span>A homegrown tool vs. proprietary product<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Building a custom solution of your own implies hiring technical staff for that purpose, but you have a greater chance of your final solution to be simple and match just your business needs.<\/p>\n<p>Purchasing an ETL tool you are more limited by the market offerings in terms of customization. To add to that, you are likely to face the complexity of educating your in-house staff, which might take a load of your company\u2019s time and resources.<\/p>\n<p>Still, according to the data below, most enterprises resort to building their own solutions. How come? Is it right or wrong? Well, it depends.<\/p>\n<p><center><a href=\"https:\/\/www.altoros.com\/blog\/wp-content\/uploads\/2008\/06\/tdwi-research-custom-etl-percent-2007.png\"><img decoding=\"async\" src=\"https:\/\/www.altoros.com\/blog\/wp-content\/uploads\/2008\/06\/tdwi-research-custom-etl-percent-2007-1024x768.png\" width=\"640\" class=\"aligncenter size-large wp-image-64190\" \/><\/a><small>The market share for proprietary tools vs. hand-coding (<a href=\"https:\/\/www.slideshare.net\/mrm0\/etl-market-webcast\" rel=\"noopener noreferrer\" target=\"_blank\">image credit<\/a>)<\/small><\/center><\/p>\n<p>Either option considered, try asking yourself the following questions and you might actually come to your own decision.<\/p>\n<p>1. What are your goals, why do you need an ETL solution? Is this a one-time procedure with limited conditions or are you planning to make it a part of your organization\u2019s structure and strategy? What do you want from your ETL tool? Specify priorities.<br \/>\n2. How much can you spend on your solution, what is the budget?<br \/>\n3. How many data sources are you working with, and what kind are they? What functionality do they already have that might be helpful at the extraction\/transformation.<br \/>\n4. How much time can you painlessly allow for the transformation process?, for your entire ETL process?<br \/>\n5. How much human resources and time can you dedicate to this project? (don\u2019t forget about education)<br \/>\n6. If you decide to build your own solution, who is going to educate your staff? Are you competent enough in the processes and concepts (such as ETL, <a href=\"https:\/\/www.altoros.com\/blog\/5-things-to-watch-out-for-in-data-warehousing\/\">data warehousing<\/a>, etc.)?<br \/>\n7. Just how many ETL experts do you have in your company and how do you estimate their potential and skill? Are they replaceable?<\/p>\n<p>After reading these 7 for starters, check out <a href=\"https:\/\/www.altoros.com\/blog\/data-integration-etl-vs-hand-coding\/\">this opinion<\/a> about hand-coding or learn about other <a href=\"https:\/\/www.altoros.com\/blog\/how-to-evaluate-an-etl-tool\/\">things to keep in mind<\/a> when choosing an ETL tool.<\/p>\n<p>&nbsp;<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Further_reading\"><\/span>Further reading<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><a href=\"https:\/\/www.altoros.com\/blog\/data-integration-etl-vs-hand-coding\/\">Data Integration: ETL vs. Hand-Coding<\/a><\/li>\n<li><a href=\"https:\/\/www.altoros.com\/blog\/etl-whats-in-abbreviation\/\">ETL: What\u2019s in the Abbreviation?<\/a><\/li>\n<li><a href=\"https:\/\/www.altoros.com\/blog\/the-three-most-common-problems-faced-during-data-migration\/\">The Three Most Common Problems Faced During Data Migration<\/a><\/li>\n<\/ul>\n<hr\/>\n<p><center><small>The post is written by Alena Semeshko; edited by <a href=\"https:\/\/www.altoros.com\/blog\/author\/alex\/\">Alex Khizhniak<\/a>.<\/small><\/center><\/p>\n","protected":false},"excerpt":{"rendered":"<p>(Featured image credit)<\/p>\n<p>&nbsp;<\/p>\n<p>The ETL\u2013migration puzzle<\/p>\n<p>Before jumping into anything or rushing to a popular software vendor, many integration experts analyze the degree to which an out-of-the-box ETL tool will benefit their company or whether it might be wiser to build a custom product from scratch. At the same time, some people [&#8230;]<\/p>\n","protected":false},"author":178,"featured_media":64020,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","footnotes":"","_links_to":"","_links_to_target":""},"categories":[7],"tags":[960,895],"class_list":["post-49549","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news-and-opinion","tag-data-integration","tag-research-and-development"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Making an ETL of Your Own\u2014Wise or Not? | Altoros<\/title>\n<meta name=\"description\" content=\"ETL tools. Develop one of your own or buy one from a trusted vendor? What\u2019s best for your company?\" \/>\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.altoros.com\/blog\/making-an-etl-of-your-own-wise-or-not\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Making an ETL of Your Own\u2014Wise or Not? | Altoros\" \/>\n<meta property=\"og:description\" content=\"(Featured image credit) &nbsp; The ETL\u2013migration puzzle Before jumping into anything or rushing to a popular software vendor, many integration experts analyze the degree to which an out-of-the-box ETL tool will benefit their company or whether it might be wiser to build a custom product from scratch. 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