1. The term _______ is used to refer to a row.

Answer. Tuple



2. The term attribute refers to a ___________ of a table.

Answer. Column



3. Name the procedural language -

Answer. Relational algebra



4. Which operation allows the combining of two relations by merging pairs of tuples, one from each relation, into a single tuple?

Answer. Join



5. The subset of a super key is a candidate key under what condition?

Answer. No proper subset is a super key



6. Which property of the entire relation, rather than of the individual tuples in which each tuple is unique?

Answer. Key



7. Which is used to denote the selection operation in relational algebra?

Answer. Sigma



8. For select operation the ________ appear in the subscript and the ___________ argument appears in the paranthesis after the sigma.

Answer. Predicates, relation



9.{t | _ s _ instructor (t[name] = s[name] _ _ u _ department (u[dept name] = s[dept name] _ u[building] = "Watson"))} Which best describes the query?

Answer. Finds the names of all instructors whose department is in the Watson building



10. Which symbol is used in the place of except?

Answer. _