{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T14:32:31Z","timestamp":1777645951395,"version":"3.51.4"},"reference-count":0,"publisher":"SAGE Publications","issue":"1-2","license":[{"start":{"date-parts":[[1997,1,1]],"date-time":"1997-01-01T00:00:00Z","timestamp":852076800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Fundamenta Informaticae"],"published-print":{"date-parts":[[1997,1]]},"abstract":"<jats:p>We exhibit some new connections between structure of an information system and its corresponding semilattice of equivalence relations. In particular, we investigate dependency properties and introduce a partial ordering of information systems over a fixed object set U which reflects the sub-semilattice relation on the set of all equivalence relations on U.<\/jats:p>","DOI":"10.3233\/fi-1997-291206","type":"journal-article","created":{"date-parts":[[2019,12,2]],"date-time":"2019-12-02T21:04:28Z","timestamp":1575320668000},"page":"119-133","source":"Crossref","is-referenced-by-count":26,"title":["ALGEBRAIC ASPECTS OF ATTRIBUTE DEPENDENCIES IN INFORMATION SYSTEMS"],"prefix":"10.1177","volume":"29","author":[{"given":"Ivo","family":"D\u00fcntsch","sequence":"first","affiliation":[{"name":"School of Information and Software Engineering, University of Ulster, Newtownabbey, N. Ireland, e-mail: I.Duentsch@ulst.ac.uk"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"G\u00fcnther","family":"Gediga","sequence":"additional","affiliation":[{"name":"Fachbereich Psychologie, Universit\u00e4t Osnabr\u00fcck, Osnabr\u00fcck, Germany, e-mail: ggediga@luce.psycho.uni-osnabrueck.de"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[1997,1,1]]},"container-title":["Fundamenta Informaticae"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.3233\/FI-1997-291206","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.3233\/FI-1997-291206","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T06:33:53Z","timestamp":1777444433000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.3233\/FI-1997-291206"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1997,1]]},"references-count":0,"journal-issue":{"issue":"1-2","published-print":{"date-parts":[[1997,1]]}},"alternative-id":["10.3233\/FI-1997-291206"],"URL":"https:\/\/doi.org\/10.3233\/fi-1997-291206","relation":{},"ISSN":["0169-2968","1875-8681"],"issn-type":[{"value":"0169-2968","type":"print"},{"value":"1875-8681","type":"electronic"}],"subject":[],"published":{"date-parts":[[1997,1]]}}}