{"id":4312,"date":"2020-10-30T23:27:14","date_gmt":"2020-10-30T22:27:14","guid":{"rendered":"https:\/\/webhosting.de\/?p=4312"},"modified":"2020-10-30T23:27:14","modified_gmt":"2020-10-30T22:27:14","slug":"databaseserver","status":"publish","type":"post","link":"https:\/\/webhosting.de\/da\/datenbank-server\/","title":{"rendered":"Databaseserver"},"content":{"rendered":"

En databaseserver kan implementeres som software eller som hardware i et databasesystem. I de fleste tilf\u00e6lde er det en del af en serverarkitektur med flere niveauer. Databaseserveren er v\u00e6rt for et eller flere databasesystemer. Der er adgang til databaseserveren via applikationsserveren, som indeholder applikationssoftwaren. Databaseservere g\u00f8r f.eks. virksomhedsdata tilg\u00e6ngelige for computere i netv\u00e6rket via applikationsprogrammerne. De fungerer som knudepunkter i en virksomheds netv\u00e6rksarkitektur. Hardwaren, softwaren og anvendelsesmulighederne for databaseservere er et omr\u00e5de, der h\u00f8rer til IT-industriens omr\u00e5de. Dataloger med viden inden for serverarkitektur og netv\u00e6rksteknologi er specialiseret i vedligeholdelse, pleje og genopretning af databaseservere efter systemnedbrud.<\/p>\n

Softwarebaseret databaseserver<\/h3>\n

Databasesystemer, s\u00e5som Oracle, Firebird, Microsoft<\/a> SQL Server eller MySQL<\/a> har en enorm spredning af anvendelsesmuligheder. De anvendes i koncerner, mellemstore virksomheder og af private brugere. F\u00f8r du k\u00f8ber og implementerer et netv\u00e6rk med en databaseserver, er det vigtigt at planl\u00e6gge p\u00e5 forh\u00e5nd. Databaseserverens rolle i forbindelse med dataforsyningen b\u00f8r defineres pr\u00e6cist. Fagpressen og internettet kan bruges til at unders\u00f8ge, om applikationssoftwaren er kompatibel med databasesystemet eller databaseserveren uden fejl. Fejl i tilvejebringelsen eller overf\u00f8rslen af data f\u00f8rer til forstyrrelser i processerne og til mangelfulde arbejdsresultater.<\/p>\n

Databaseserver i form af hardware<\/h3>\n

I sm\u00e5 og mellemstore databasesystemer er databaseserveren udformet n\u00f8jagtig p\u00e5 samme m\u00e5de som en normal netv\u00e6rksserver. Hukommelsesenheder, forbindelser og CPU er designet til implementering i et netv\u00e6rk. I store netv\u00e6rk i mellemstore virksomheder og selskaber anvendes specielt konstruerede computere som servere og databaseservere.<\/p>\n

Fejlkilder ved brug af databaseservere<\/h3>\n

En databaseserver er udsat for enorme belastninger under drift. Fejlmulighederne sp\u00e6nder fra overophedning som f\u00f8lge af kontinuerlig drift, fejl i databasesoftwaren, mekaniske skader p\u00e5 lagermediet til skader for\u00e5rsaget af computervirus og hackerangreb. F\u00f8r du starter en data recovery, skal kilden til fejlen bestemmes n\u00f8jagtigt. Softwarefejl kan i de fleste tilf\u00e6lde repareres med v\u00e6rkt\u00f8jer i databaseprogrammet.<\/p>\n

F\u00f8lgerne af mekaniske skader eller hackerangreb b\u00f8r afhj\u00e6lpes af specialister. IT-virksomheder med speciale i netv\u00e6rksteknologi og serverteknologi har egnede lokaler og det tekniske udstyr til professionel datagendannelse. Sikkerhedskopien af den Data<\/a> fra databaseserveren kan underst\u00f8ttes p\u00e5 forh\u00e5nd ved hj\u00e6lp af regelm\u00e6ssige sikkerhedskopier. Dette hj\u00e6lper med datagendannelse og minimerer de skader, der opst\u00e5r ved computernedbrud.<\/p>\n

Freeware eller et kendt softwarefirma?<\/h3>\n

Produkterne fra de kendte softwareselskaber som Oracle, Microsoft og SAP har en fremragende funktionalitet. Deres priser kan overstige budgettet for mellemstore virksomheder eller sm\u00e5 virksomheder. Softwarebaserede databaseservere som freeware kan fungere lige s\u00e5 godt som de dyre produkter fra de f\u00f8rende p\u00e5 markedet. MySQL fra det svenske softwarefirma af samme navn blev udviklet som en del af et forskningsprojekt. Kildekoden er frit tilg\u00e6ngelig. Brugen er gratis. Softwaren til databaseserveren Firebird blev skabt som en del af softwareudviklingen af Borlans InterBase. SAP DB er et open source-projekt fra den verdensber\u00f8mte softwareproducent fra Walldorf, som er frit tilg\u00e6ngeligt som databaseserver. Til administration af dataene i backend-omr\u00e5det og lagring af databaserne med henblik p\u00e5 overf\u00f8rsel til arbejdsstationer er de n\u00e6vnte databaseservere s\u00e6rdeles velegnede. Softwarens kompatibilitet med frontend-modulerne og de eksisterende dataformater b\u00f8r kontrolleres, f\u00f8r du bruger en freeware-databaseserver.<\/p>","protected":false},"excerpt":{"rendered":"

Ein Datenbank Server kann als Software oder als Hardware in einem Datenbanksystem implementiert sein. Er ist in der Mehrzahl der F\u00e4lle Teil einer mehrschichtigen Serverarchitektur. Der Datenbank Server beherbergt ein Datenbanksystem oder mehrere Datenbanksysteme. \u00dcber den sogenannten Applikationsserver, der die Anwendungssoftware beinhaltet, kann auf den Datenbank Server zugegriffen werden. Datenbankserver stellen zum Beispiel Unternehmensdaten \u00fcber 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