{"id":7123,"date":"2023-12-13T13:23:39","date_gmt":"2023-12-13T13:23:39","guid":{"rendered":"https:\/\/www.novotek.com\/dk\/?post_type=insights&#038;p=7123"},"modified":"2023-12-13T14:46:52","modified_gmt":"2023-12-13T14:46:52","slug":"historian-database-vs-relationsdatabase","status":"publish","type":"insights","link":"https:\/\/www.novotek.com\/dk\/insight\/historian-database-vs-relationsdatabase\/","title":{"rendered":"Fordelene ved en historian database vs. en relationsdatabase"},"content":{"rendered":"<div class=\"container-md paragraph  \">\n<p>Skal du v\u00e6lge en relationsdatabase eller en historian database (procesdatabase)? Se en sammenligning mellem funktionerne i de to forskellige databaser.<\/p>\n<\/div>\n\n<div class=\"container-md image  \">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"682\" src=\"https:\/\/www.novotek.com\/dk\/wp-content\/uploads\/sites\/4\/historian\/Historian_RDB_header-1024x682-1.png\" alt=\"historian procesdatabase\" class=\"wp-image-7125\" srcset=\"https:\/\/www.novotek.com\/dk\/wp-content\/uploads\/sites\/4\/historian\/Historian_RDB_header-1024x682-1.png 1024w, https:\/\/www.novotek.com\/dk\/wp-content\/uploads\/sites\/4\/historian\/Historian_RDB_header-1024x682-1-300x200.png 300w, https:\/\/www.novotek.com\/dk\/wp-content\/uploads\/sites\/4\/historian\/Historian_RDB_header-1024x682-1-768x512.png 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>Den konstante stigning i m\u00e6ngden af \u200b\u200bdata g\u00f8r det vigtigt for produktionsvirksomheder at kunne indsamle, opbevare og distribuere disse data til videre brug. Adgang til data giver vigtig information og l\u00e6gger grundlaget for hurtigere og bedre beslutninger, \u00f8get produktivitet og reducerede omkostninger.<\/p>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>Mange industrivirksomheder bruger relationsdatabaser (RDB) til denne opgave. Relationsdatabaser er bygget til at administrere relationer og er ideelle til at gemme kontekstuelle eller genealogiske oplysninger om fremstillingsprocessen. Udfordringen er, at de ofte ikke har de rigtige funktioner til at h\u00e5ndtere store m\u00e6ngder tidsserier \/ procesdata.<\/p>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>Historiandatabaser er p\u00e5 den anden side designet til indsamling, lagring og distribution af h\u00f8jopl\u00f8selige procesdata. De fanger tidsserier og A&amp;E-data fra enhed til virksomhedsniveau, hvilket giver et overblik over hele produktionsprocessen.<\/p>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>I denne artikel ser vi n\u00e6rmere p\u00e5 forskellene mellem en historian software og en relationsdatabase, s\u00e5 du kan v\u00e6lge den database, der opfylder dine behov.<\/p>\n<\/div>\n\n<div class=\"container-md heading  \">\n<h2 class=\"wp-block-heading\">Implementering<\/h2>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>Relationsdatabaser har ikke indbyggede dataindsamlingsmuligheder. I stedet skal der skrives tilpasset kode for hver enkelt datakilde. Denne type specialtilpassede systemer betyder ofte, at videreudvikling og opdateringer er dyre og tidskr\u00e6vende. Manglen p\u00e5 en webbaseret gr\u00e6nseflade betyder, at import af tags og vedligeholdelse af databasen skal udf\u00f8res under planlagt nedetid. Derudover er man begr\u00e6nset til den erfaring og ekspertise, der findes i virksomheden, med ringe mulighed for at udnytte teknologi fra andre industriakt\u00f8rer.<\/p>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>I mods\u00e6tning til relationsdatabasen kommer Historian databaser med indbygget dataindsamling, som kan hente data fra forskellige sensorer og systemer. <strong><a href=\"https:\/\/www.novotek.co.uk\/solutions-and-products\/proficy-historian\/\" target=\"_blank\" rel=\"noreferrer noopener\">GE Digitals Proficy Historian<\/a><\/strong> software bruger industristandarderne <a href=\"https:\/\/www.novotek.com\/dk\/automation\/opc\/\">OPC<\/a> og <a href=\"https:\/\/www.novotek.com\/dk\/insight\/opc-ua-vs-opc\/\">OPC UA<\/a>, som giver adgang til data p\u00e5 tv\u00e6rs af enheder. Det underst\u00f8tter ogs\u00e5 <a href=\"https:\/\/www.novotek.com\/dk\/insight\/mqtt-i-industriel-automation\/\">MQTT<\/a>, ODBC, XML\/CSV osv.<\/p>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>Derudover har den pr\u00e6byggede gr\u00e6nseflader, uden behov for brugerdefineret kodning eller scripting. Data opbevares og behandles problemfrit p\u00e5 en sikker, central placering. Dette giver bedre fleksibilitet, tidsbesparelser og reducerer omkostningerne.<\/p>\n<\/div>\n\n<div class=\"container-md heading  \">\n<h2 class=\"wp-block-heading\">Hastighed<\/h2>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>Da produktionen foreg\u00e5r i realtid, er det vigtigt, at du modtager data hurtigt. Relationelle databaser er gode til relationer og til at s\u00e6tte data i sammenh\u00e6ng. Udfordringerne opst\u00e5r, n\u00e5r foresp\u00f8rgslerne vedr\u00f8rer store datas\u00e6t eller l\u00e6ngere tidsperioder. Det betyder, at relationsdatabasen leverer med langsommere ydeevne. Som et kompromis gemmes \u00e6ldre data ofte i en lavere opl\u00f8sning. Dette er almindeligt i mange operationelle kontrolsystemer, der har en relationel database som historikmotor.<\/p>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>For hurtigere l\u00e6se-\/skriveydelse og kontinuerlig adgang til realtidsdata b\u00f8r du v\u00e6lge en historian database. Historian databaser indsamler store m\u00e6ngder procesdata p\u00e5 millisekunder. Til sammenligning er <strong><a href=\"https:\/\/www.novotek.com\/dk\/digitalisering\/dataopsamling-og-rapportering\/proficy-historian\/\" target=\"_blank\" rel=\"noreferrer noopener\">Proficy Historian<\/a><\/strong> 100-1000 gange hurtigere til at l\u00e6se og skrive end en normal relationsdatabase.<\/p>\n<\/div>\n\n<div class=\"container-md heading  \">\n<h2 class=\"wp-block-heading\">Komprimering<\/h2>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>Effektiv datalagring og komprimering muligg\u00f8r h\u00f8j ydeevne. For en relationel database sker komprimeringen manuelt, gennem administration af arkiver og diskplads. Dette bliver hurtigt et tidskr\u00e6vende job.<\/p>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>Historian databaser har kraftfulde funktioner til komprimering. Med Proficy Historian software komprimeres data f\u00f8rst &#8220;on prem&#8221; p\u00e5 opsamleren, f\u00f8r de komprimeres igen f\u00f8r opbevaring. Arkiver oprettes automatisk, sikkerhedskopieres og renses, hvilket eliminerer behovet for en databaseadministrator.<\/p>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>Grafikken nedenfor viser en sammenligning mellem Proficy Historian og en relationsdatabase, hvor Proficy Historian har v\u00e6sentligt bedre diskpladseffektivitet, selv uden komprimering.<\/p>\n<\/div>\n\n<div class=\"container-md image  \">\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"560\" src=\"https:\/\/www.novotek.com\/dk\/wp-content\/uploads\/sites\/4\/historian\/RDB_vs_Historian_Statistic-768x560-1.png\" alt=\"historian database diskplads effektivitet\" class=\"wp-image-7126\" style=\"width:840px;height:auto\" srcset=\"https:\/\/www.novotek.com\/dk\/wp-content\/uploads\/sites\/4\/historian\/RDB_vs_Historian_Statistic-768x560-1.png 768w, https:\/\/www.novotek.com\/dk\/wp-content\/uploads\/sites\/4\/historian\/RDB_vs_Historian_Statistic-768x560-1-300x219.png 300w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/figure>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p><em>Data repr\u00e6senterer en specifik test af 400.000 pr\u00f8ver, der er logget til en standard RDB og Proficy Historian. Resultaterne vil variere afh\u00e6ngigt af r\u00e5datas\u00e6ttet og hvilken RDB der bruges.<\/em><\/p>\n<\/div>\n\n<div class=\"container-md heading  \">\n<h2 class=\"wp-block-heading\">Tilg\u00e6ngelighed og redundans<\/h2>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>Det er vigtigt, at produktionsdata altid er tilg\u00e6ngelige. Relationsdatabaser tilbyder h\u00f8j tilg\u00e6ngelighed for data, der er lagret gennem grupperinger, men er s\u00e5rbare i tilf\u00e6lde af netv\u00e6rkssvigt. Afh\u00e6ngig af hvor indsamleren er placeret, oftest p\u00e5 en server, eller &#8220;on prem&#8221; ved datakilden, stopper dataindsamlingen, hvis forbindelsen afbrydes.<\/p>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>Historian-teknologi sikrer god tilg\u00e6ngelighed med redundans hos indsamleren. Proficy Historian software benytter &#8220;store &amp; forward&#8221; teknologi, som buffer data hos indsamleren, hvis der skulle opst\u00e5 en forstyrrelse. De cachelagrede data uploades derefter, n\u00e5r serveren kommer online igen med automatisk forbindelse, hvilket beskytter dig mod tab af data.<\/p>\n<\/div>\n\n<div class=\"container-md heading  \">\n<h2 class=\"wp-block-heading\">Datasikkerhed<\/h2>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>Netv\u00e6rk og databaser er konstant under angreb fra hackere og vira, hvoraf mange er rettet mod velkendte relationsdatabaser. SQL Injection\/Insertion-angreb er almindelige med relationelle databaser.<\/p>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>Nogle Historian databaser er immune over for s\u00e5danne angreb, da de ikke tillader inds\u00e6ttelse, opdatering eller sletning af data gennem standardgr\u00e6nseflader. Derudover spores alle \u00e6ndringer, herunder brugeradgang, konfigurationer, sikkerhedsbrud og systemadvarsler.<\/p>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>Visse Historian databaser leveres med underst\u00f8ttelse af regler, s\u00e5som FDA 21 Part 11. Denne funktion tilbydes ikke i relationelle databaser.<\/p>\n<\/div>\n\n<div class=\"container-md heading  \">\n<h2 class=\"wp-block-heading\">En historian database forbedrer processer p\u00e5 tv\u00e6rs af virksomheden<\/h2>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>Historian-procesdatabasen er designet til at indsamle m\u00e6ngder af data fra hele virksomheden til procesvisualisering. En &#8220;plant wide&#8221; historian forbinder b\u00e5de &#8220;\u00f8er&#8221; af automationsdata i anl\u00e6gget og anl\u00e6gsdriften op til forretningssystemer. Du kan sammenligne tidligere produktionsk\u00f8rsler og analysere data f\u00f8r nedetid, s\u00e5 du nemt kan identificere trends, afd\u00e6kke grundl\u00e6ggende \u00e5rsager og implementere tiltag til forbedringer.<\/p>\n<\/div>\n\n<div class=\"container-md paragraph  \">\n<p>Til indsamling, opbevaring og distribution af store m\u00e6ngder h\u00f8jopl\u00f8selige procesdata vil en historian give dig den bedste indsigt. Er du klar til at v\u00e6lge en kraftfuld historian procesdatabase?<\/p>\n<\/div>\n\n<div class=\"cta-block\">\n  <div class=\"container\">\n          <h2>Proficy Historian<\/h2>\n    \n          <div><p>Markedets mest kraftfulde procesdatabase, udviklet til h\u00e5ndtering af produktionsdata.<\/p>\n<\/div>\n    \n          <a class=\"btn btn-primary\" href=\"https:\/\/www.novotek.com\/dk\/digitalisering\/dataopsamling-og-rapportering\/proficy-historian\/\">Proficy Historian<\/a>\n      <\/div>\n<\/div>\n\n\n<div class=\"container-md\">\n  <div class=\"download-files\">\n          <strong>Download artiklen<\/strong>\n    \n          <div><p>The Advantages of Plant Wide Historians Versus Relational Databases<\/p>\n<\/div>\n    \n          <ul>\n                  <li>\n                          \n                <div class=\"download-single-file-thumbnail\">\n                  <a href=\"\" download><img decoding=\"async\" class=\"svg-primary\" src=\"https:\/\/www.novotek.com\/dk\/wp-content\/themes\/novotek-multi\/assets\/svg\/file.svg\"><\/a>\n                <\/div>\n\n                <div class=\"download-single-file-content\">\n                  <a href=\"\" download><strong>Fordelene ved en historian database vs. en relationsdatabase<\/strong><\/a>\n\n                  <div class=\"download-single-file-details\">\n                  <a href=\"\" download><\/a>\n                  <\/div>\n                <\/div>\n\n                          \n          <\/li>\n              <\/ul>\n      <\/div>\n<\/div>\n\n\n<script>\n    function setCookie(key, value, expiry) {\n        var expires = new Date();\n        expires.setTime(expires.getTime() + (expiry * 24 * 60 * 60 * 1000));\n        document.cookie = key + '=' + value + ';expires=' + expires.toUTCString() + '; path=\/';\n    }\n\n    jQuery(document).ready(function($) {\n      $('.btn-primary').click(function() {\n        console.log('yes');\n        setCookie('firstname', $('input.firstname').val(), '30');\n        setCookie('lastname', $('input.lastname').val(), '30');\n        setCookie('email', $('input.email').val(), '30');\n      });\n    });\n<\/script>","protected":false},"excerpt":{"rendered":"<p>Skal du v\u00e6lge en relationsdatabase eller en historian database? Se en sammenligning mellem funktionerne i de to forskellige databaser.<\/p>\n","protected":false},"featured_media":0,"template":"","insight_category":[30],"class_list":["post-7123","insights","type-insights","status-publish","hentry","insight_category-artikel"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Historian software database vs. relationsdatabase - Hvad er bedst?<\/title>\n<meta name=\"description\" content=\"Skal du v\u00e6lge en relationsdatabase eller historian software database? 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