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[{"key": "dc.contributor.advisor", "value": "Marttiin, Pentti", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "M\u00e4enp\u00e4\u00e4, Sara", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2021-03-31T12:08:58Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2021-03-31T12:08:58Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2021", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/74920", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Perinnej\u00e4rjestelm\u00e4t ovat vanhoja, joustamattomia sek\u00e4 liiketoiminnan kannalta kriittisi\u00e4 tietoj\u00e4rjestelmi\u00e4, jotka sy\u00f6v\u00e4t yritysten kuluja kalliin yll\u00e4pidon muodossa. N\u00e4ist\u00e4 j\u00e4rjestelmist\u00e4 on kuitenkin vaikea p\u00e4\u00e4st\u00e4 eroon, sill\u00e4 uudistaminen on kallis ja riskialtis projekti. T\u00e4m\u00e4n kandidaatin tutkielman tarkoituksena on selvitt\u00e4\u00e4 mit\u00e4 perinnej\u00e4rjestelm\u00e4t ovat ja mink\u00e4laisilla eri strategioilla perinnej\u00e4rjestelmi\u00e4 voidaan uudistaa. Perinnej\u00e4rjestelm\u00e4t rasittavat yrityksi\u00e4 yll\u00e4pitokulujen lis\u00e4ksi kalliin ty\u00f6voiman merkeiss\u00e4. Sen lis\u00e4ksi nykyajan teknologian integroiminen niihin on haastavaa. Modernisoiminen t\u00e4ht\u00e4\u00e4 n\u00e4iden ongelmien minimoimiseen ja j\u00e4ykkien j\u00e4rjestelmien eheytt\u00e4miseen. Erilaisia strategioita on kirjallisuudessa esitetty lukuisia, mutta laadukasta ja yhten\u00e4ist\u00e4 tutkimusta on v\u00e4h\u00e4n. T\u00e4ss\u00e4 tutkielmassa tuloksena esitell\u00e4\u00e4n nelj\u00e4 modernisoinnin strategiaa: uudelleenmallinnus, k\u00e4\u00e4riminen, migraatio sek\u00e4 korvaaminen, joiden hyvi\u00e4 ja huonoja puolia vertaillaan kattavan kokonaiskuvan saamiseksi. Tutkielma on toteutettu systemaattisena kirjallisuuskatsauksena.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Legacy systems are old, inflexible, and business critical information systems that trouble companies due to excessive maintenance costs. These information systems are hard to get rid of because modernization process is an expensive and risky project. This Bachelor\u2019s Thesis\u2019s purpose is to find out what charac-teristics legacy systems have and how those can be modernized. In addition to other maintenance costs legacy systems often require valuable high skilled sys-tem experts. Legacy systems are also not compatible with modern technology. Modernizing these systems aims to solve these problems. There are many dif-ferent strategies to modernize legacy systems, but the research lacks papers that put together these strategies. In this systematic literature review different classifications for modernization are studied and four modernization strategies are evaluated: re-engineering, wrapping, migration and replacement.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Miia Hakanen (mihakane@jyu.fi) on 2021-03-31T12:08:58Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2021-03-31T12:08:58Z (GMT). No. of bitstreams: 0\n Previous issue date: 2021", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "37", "language": "", "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.language.iso", "value": "fin", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": "en", "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "perinnej\u00e4rjestelm\u00e4t", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "modernisointi", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Perinnej\u00e4rjestelmien modernisoimisen strategiat", "language": "", "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "bachelor thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-202103312252", "language": "", "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Bachelor's thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Kandidaatinty\u00f6", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Informaatioteknologian tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Information Technology", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Informaatioteknologia", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Information Technology", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Tietoj\u00e4rjestelm\u00e4tiede", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Information Systems Science", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "yvv.contractresearch.funding", "value": "0", "language": "", "element": "contractresearch", "qualifier": "funding", "schema": "yvv"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_7a1f", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "openAccess", "language": null, "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "bachelorThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.subject.oppiainekoodi", "value": "601", "language": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "j\u00e4rjestelm\u00e4t", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "tietoj\u00e4rjestelm\u00e4tiede", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}]
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