4. Write the operation symbol and its name for each operation in the following table: (2 point) Operation Name Purpose Returns its argument relation,
4. Write the operation symbol and its name for each operation in the following table: (2 point) Operation Name Purpose Returns its argument relation, with certain attributes left out. Selects tuples that satisfy a given predicate The results of relational-algebra expressions do not have a name that we can use to refer to them. Allows us to combine information from any two relations
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a returns its argument relation with certain attributes left out Operation sys...
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Authors: Gerald E. Whittenburg, Martha Altus Buller, Steven L Gill
31st Edition
1111972516, 978-1285586618, 1285586611, 978-1285613109, 978-1111972516
