Question: For these problems, R = (A, B, C) as before, and let there be two relations r1(R) and r2(R). Write complete SQL queries (not SQL

For these problems, R = (A, B, C) as before, and let there be two relations r1(R) and r2(R). Write complete SQL queries (not SQL fragments) that produce identical results to these relational algebra expressions.

a) For these problems, R = (A, B, C) as before, and let

b) there be two relations r1(R) and r2(R). Write complete SQL queries (not

c) SQL fragments) that produce identical results to these relational algebra expressions. a)

ri Ur2 T1102- 11 72

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