CS430 Midterm 2 Exam Practice Questions and Answers
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Course
2024/2025
Institution
2024/2025
CS430 Midterm 2 Exam Practice
Questions and Answers
One key difference between a natural join and an inner join is: - Ans:-the number of columns
returned
We define a view in SQL by using the create view command. - Ans:-True
To remove an authorization, we use the ________________command. - Ans:...
____________________ are a scheme that allows authorizations to be assigned to a set of
responsibilities, and people to be assigned to those responsibilities. - Ans:✔✔-Roles
Outer join query operations can be implemented by a simple extension of join algorithms. - Ans:✔✔-
True
Indices are created by using the "GRANT index {index-name} on {relation-name} using {field-name}"
command. - Ans:✔✔-False
What are the two possible SQL statements that must end a transaction? - Ans:✔✔-Commit work
Rollback work
What is the concept of referential integrity? - Ans:✔✔-That a foreign key entry in one table must point to
a valid record in the table associated with the foreign key.
Which of the following is true about SQL? - Ans:✔✔-SQL is both a Data Manipulation Language (DML)
and a Data Definition Language (DDL).
SQL specifies strings by enclosing them in double quotes. - Ans:✔✔-False
The _________________ command is used to insert data into a relation. - Ans:✔✔-insert
Match the domain type to its description.
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