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THE RELATIONAL DATA MODEL
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A-names actual addition advance Appendix applications approach arguments associated assumed attribute description set attribute name basis BDBs block bound cardinality estimation characteristics combined communication complex components computed considered constructed contain context cost estimation COUNTRY database defined definition derived described developed distributions elementary predicates English Summary essential example expression extended file descriptions formal function functional dependencies given gives implementation intermediate join join attribute lower Management manipulation MARKET-SHARE MARKETS means method methodology NDBs necessary needed operand file operations optimization organization parameters possible printed problems procedure processing processing-based PRODUCT PRODUCT-NO projection query cost modelling RA operations range records references relational represented respect restriction result result file retrieved sample query selectivity Services sort sources standard storage structure Systems TAHITI Tampere TRADEMARK transfer TYPE unit user charge estimation values