It is sometimes suggested that a relvar is really just a traditional computer file, with “tuples” instead of records and “attributes” instead of fields. Discuss.
Answer to relevant QuestionsGive Tutorial d formulations for the following updates to the suppliers-parts-projects data-base;(a) Insert a new shipment with supplier number S1, part number P1, project number J2, quantity 500.(b) Insert a new supplier ...Which of the relational operators defined in this chapter have a definition that does not rely on tuple equality?Given that intersect is a special case of join, why do not both operators give the same result when applied to no relation at all?Get all pairs of part numbers such that some supplier supplies both the indicated parts.Get project number for projects supplied with at least all parts available from supplier S1.
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