The Relational Database Dictionary, Extended EditionApress, 14 ott 2008 - 200 pagine Chris Date, one of the founders of the relational model, has updated and expanded his relational database dictionary to include more than 900 terms. |
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The Relational Database Dictionary, Extended Edition Christopher Date Anteprima non disponibile - 2008 |
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appears apply argument assignment attribute base body calculus called CITY connectives consisting constraint contains context Contrast corresponding current value database defined definition denotes dependency derived dictionary difference distinct domain domain calculus dyadic effect element of s1 empty equal equivalent evaluates exactly example exists expression extended fact FALSE foreign key function given heading identity implementation implied includes inference integers intersection invocation it’s join language least literal logical loosely mathematics mean necessarily normal form Note operator ordering pairing parameter particular physical possible precisely predicate Principle projections proposition query question r1 and r2 range refer relational model relvar relvar SP RENAME represented respectively result returns rule satisfied semantically sense set theory sometimes specifically statement STATUS subset superkey supplier term there’s TRUE tuple union update usually variable WEIGHT