Question: 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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