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sql-equivalence

GATE CSE & IT · Relational Model · 2009-2009

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Korth — Database System Concepts

Relational model, SQL, normalization, transactions

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2009 PYQ

Let R and S be relational schemes such that R = { a, b, c } and S = { c }. Now consider the following queries on the database: I. $$\pi_{R-S}(r) - \pi_{R-S} \left (\pi_{R-S} (r) \t...

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