{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,16]],"date-time":"2026-03-16T09:36:23Z","timestamp":1773653783859,"version":"3.50.1"},"reference-count":15,"publisher":"Elsevier BV","issue":"1","license":[{"start":{"date-parts":[[1984,2,1]],"date-time":"1984-02-01T00:00:00Z","timestamp":444441600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2013,7,17]],"date-time":"2013-07-17T00:00:00Z","timestamp":1374019200000},"content-version":"vor","delay-in-days":10759,"URL":"https:\/\/www.elsevier.com\/open-access\/userlicense\/1.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Computer and System Sciences"],"published-print":{"date-parts":[[1984,2]]},"DOI":"10.1016\/0022-0000(84)90081-3","type":"journal-article","created":{"date-parts":[[2003,12,3]],"date-time":"2003-12-03T06:59:35Z","timestamp":1070434775000},"page":"167-189","source":"Crossref","is-referenced-by-count":187,"title":["Testing containment of conjunctive queries under functional and inclusion dependencies"],"prefix":"10.1016","volume":"28","author":[{"given":"D.S.","family":"Johnson","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A.","family":"Klug","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"78","reference":[{"key":"10.1016\/0022-0000(84)90081-3_BIB1","doi-asserted-by":"crossref","first-page":"218","DOI":"10.1137\/0208017","article-title":"Equivalences among relational expressions","volume":"8","author":"Aho","year":"1979","journal-title":"SIAM J. Comput."},{"key":"10.1016\/0022-0000(84)90081-3_BIB2","doi-asserted-by":"crossref","first-page":"435","DOI":"10.1145\/320107.320112","article-title":"Efficient optimization of a class of relational expressions","volume":"4","author":"Aho","year":"1979","journal-title":"ACM Trans. Database Systems"},{"key":"10.1016\/0022-0000(84)90081-3_BIB3","doi-asserted-by":"crossref","unstructured":"M. A. CASANOVA, R. FAGIN, AND C. H. PAPADIMITRIOU, Inclusion dependencies and their interaction with functional dependencies, J. Comput. System Sci., in press.","DOI":"10.1145\/588111.588141"},{"key":"10.1016\/0022-0000(84)90081-3_BIB4","series-title":"Proceedings 13th Ann. ACM Symp. on Theory, of Computing","first-page":"342","article-title":"Embedded implicational dependencies and their inference problem","author":"Chandra","year":"1981"},{"key":"10.1016\/0022-0000(84)90081-3_BIB5","series-title":"Proceedings 9th Ann. ACM Symp. on Theory of Computing","first-page":"77","article-title":"Optimal implementation of conjunctive queries in relational data bases","author":"Chandra","year":"1977"},{"key":"10.1016\/0022-0000(84)90081-3_BIB6","doi-asserted-by":"crossref","first-page":"377","DOI":"10.1145\/362384.362685","article-title":"A relational model of data for large shared data banks","volume":"13","author":"Cord","year":"1970","journal-title":"Comm. ACM"},{"key":"10.1016\/0022-0000(84)90081-3_BIB7","doi-asserted-by":"crossref","first-page":"397","DOI":"10.1145\/320107.320109","article-title":"Extending the database relational model to obtain more meaning","volume":"4","author":"Codd","year":"1979","journal-title":"ACM Trans. Database Systems"},{"key":"10.1016\/0022-0000(84)90081-3_BIB8","doi-asserted-by":"crossref","first-page":"387","DOI":"10.1145\/319587.319592","article-title":"A normal form for relational databases that is based on domains and keys","volume":"6","author":"Fagin","year":"1981","journal-title":"ACM Trans. Database Systems"},{"key":"10.1016\/0022-0000(84)90081-3_BIB9","doi-asserted-by":"crossref","first-page":"616","DOI":"10.1137\/0212042","article-title":"Optimizing conjunctive queries that contain untyped variables","volume":"12","author":"Johnson","year":"1983","journal-title":"SIAM J. Comput."},{"key":"10.1016\/0022-0000(84)90081-3_BIB10","series-title":"Entity-Relationship Approach to Systems Analysis and Design","first-page":"35","article-title":"Entity relationship views over uninterpreted enterprise schemes","author":"Klug","year":"1980"},{"key":"10.1016\/0022-0000(84)90081-3_BIB11","doi-asserted-by":"crossref","first-page":"455","DOI":"10.1145\/320107.320115","article-title":"Testing implications of data dependencies","volume":"4","author":"Maier","year":"1979","journal-title":"ACM Trans. Database Systems"},{"key":"10.1016\/0022-0000(84)90081-3_BIB12","doi-asserted-by":"crossref","DOI":"10.1016\/S0019-9958(83)80002-3","article-title":"The Implication Problem for Functional and Inclusion Dependencies","author":"Mitchell","year":"1983"},{"key":"10.1016\/0022-0000(84)90081-3_BIB13","doi-asserted-by":"crossref","first-page":"405","DOI":"10.1145\/359605.359620","article-title":"Database abstractions: Aggregation","volume":"20","author":"Smith","year":"1977","journal-title":"Comm. ACM"},{"key":"10.1016\/0022-0000(84)90081-3_BIB14","unstructured":"M. VARDI, Personal communication, 1982."},{"key":"10.1016\/0022-0000(84)90081-3_BIB15","series-title":"Proceedings ACM SIGMOD Conf","first-page":"179","article-title":"Design of relational views over network schemes","author":"Zaniolo","year":"1979"}],"container-title":["Journal of Computer and System Sciences"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:0022000084900813?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:0022000084900813?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2019,2,16]],"date-time":"2019-02-16T10:53:47Z","timestamp":1550314427000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/0022000084900813"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1984,2]]},"references-count":15,"journal-issue":{"issue":"1","published-print":{"date-parts":[[1984,2]]}},"alternative-id":["0022000084900813"],"URL":"https:\/\/doi.org\/10.1016\/0022-0000(84)90081-3","relation":{},"ISSN":["0022-0000"],"issn-type":[{"value":"0022-0000","type":"print"}],"subject":[],"published":{"date-parts":[[1984,2]]}}}