<?xml version="1.0"?>
<dblp>
<article key="journals/tods/IoannidisR95" mdate="2006-04-03">
<author>Yannis E. Ioannidis</author>
<author>Raghu Ramakrishnan</author>
<title>Containment of Conjunctive Queries: Beyond Relations as Sets</title>
<pages>288-324</pages>
<year>1995</year>
<volume>20</volume>
<journal>ACM Trans. Database Syst.</journal>
<number>3</number>
<url>db/journals/tods/tods20.html#IoannidisR95</url>
<cdrom>TODS20/P288.PDF</cdrom>
<ee>http://doi.acm.org/10.1145/211414.211419</ee>
<ee>db/journals/tods/IoannidisR95.html</ee>
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</article>
</dblp>
