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CMPT 339 A - Intr to Database Management Systems (FA 2026)
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Which two clauses of a SELECT statement are mandatory?
Use the following relations R and S to answer the question:
Compute R ⋈ S. Which of the following records will be in the result?
Use the following relations R and S to answer the question:
Compute π B, C (R ⋈ S). Which of the following records will be in the result?
What is the effect of SELECT DISTINCT propertyNo FROM Viewing?
Use the following relations R and S to answer the question:
Compute R ⋈R.A<S.C S. [this is theta join]. Which of the following records will be in the result?(Note: R.A means the attribute A of the relation R.)
Use the following relations R and S to answer the question:
Compute R ⋈R.A<S.C S. [this is theta join]. Which of the following records will be in the result?(Note: R.A means the attribute A of the relation R.)
In ORDER BY type_, rent DESC, what role does rent play?
How do you correctly test whether no comment was supplied (i.e. comment_ is missing)?
What relational algebra operation is described by the following?
What relational algebra operation is described by the following?