Relational Algebra is an offshoot of first-order logic and of the algebra of sets that deals with relations (sets of tuples).
Is there a relational algebra equivalent of the SQL expression NOT IN? For example if I have the relation: A1 | …
sql relational-algebraI'm not sure if the following two relations are compatible for a union: R: <- schema name B 1 2 2 3 3 And: …
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sql aggregate aggregate-functions max relational-algebraI'm looking for a clear, basic explanation of the concept of theta join in relational algebra and perhaps an example (…
sql relational-database cartesian-product relational-algebraSuppose the relation R( K, L, M, N, P), and the functional dependencies that hold on R are: - L …
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relational-database relational-algebrahere it says Selection and cross product Cross product is the costliest operator to evaluate. If the input relations have …
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