Study tips 1Z0-051

Which four statements are true of the SQL statement?

What does this allow you to do?

Which two statements about creating constraints are true?

Which two statements are true about WHERE and HAVING clauses?

What happens when the statement is executed?

Which SQL statement accepts user input for the columns to be displayed, the table name, and WHERE condition?

Which values are displayed?

Which expression finds the number of different countries represented in the CUSTOMERS table?

Which DELETE statement is valid?

Which SQL statement produces an error?