Consider the SQL type point and the SQL table points as defined in the subsection “Structured Types” Type Point has a representation involving Cartesian coordinates X and Y. What happens if we replace that type by a revised type point with a representation involving polar coordinates R and θ instead?
Answer to relevant QuestionsWhich of the relational operators defined in this chapter have a definition that does not rely on tuple equality?In ordinary arithmetic, multiplication and division are inverse operation. Are times and divide by inverse operations in the relation algebra?Get part numbers for parts supplied by a supplier in London to a project in London.Get supplier number for projects supplied with part P1 in an average quantity greater than the greatest quantity in which any part is supplied to project J1.Express the single-pair shortest-path problem as a linear program.
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