{"id":1587,"date":"2008-03-10T16:12:14","date_gmt":"2008-03-10T16:12:14","guid":{"rendered":"http:\/\/inacreditavel.ioio.info\/?p=1587"},"modified":"2008-03-10T16:12:14","modified_gmt":"2008-03-10T16:12:14","slug":"codd-volta-estas-perdoado","status":"publish","type":"post","link":"http:\/\/www.inacreditavel.pt\/?p=1587","title":{"rendered":"Codd volta, est\u00e1s perdoado"},"content":{"rendered":"<p>Que \u00e9 que este gajo quer dizer? <\/p>\n<p>It is interesting to note that projection over no attributes at all is possible, yielding a relation of degree zero. In this case the cardinality of the result is zero if the operand is empty, otherwise one. The two relations of degree zero are the only ones that cannot be depicted as tables.<\/p>\n<p><img src='http:\/\/www.inacreditavel.pt\/wp-content\/uploads\/sites\/17\/2008\/03\/projection.JPG' alt='Projection' \/><\/p>\n<p>Codd, que tens a dizer a este gajo?<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Que \u00e9 que este gajo quer dizer? It is interesting to note that projection over no attributes at all is possible, yielding a relation of degree zero. In this case the cardinality of the result is zero if the operand is empty, otherwise one. The two relations of degree zero are the only ones that [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"_links":{"self":[{"href":"http:\/\/www.inacreditavel.pt\/index.php?rest_route=\/wp\/v2\/posts\/1587"}],"collection":[{"href":"http:\/\/www.inacreditavel.pt\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.inacreditavel.pt\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.inacreditavel.pt\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"http:\/\/www.inacreditavel.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1587"}],"version-history":[{"count":0,"href":"http:\/\/www.inacreditavel.pt\/index.php?rest_route=\/wp\/v2\/posts\/1587\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.inacreditavel.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1587"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.inacreditavel.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1587"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.inacreditavel.pt\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1587"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}