Consider the relations shown in the exhibit. Due to restructuring, the sales department has
been eliminated and the employees working in that department have been dismissed. All ID
information is stored as integers. Which SQL statement would be used to return a relation with all
information for the employees who have been dismissed?
Which term describes the management of simultaneous transactions to prevent conflicts?
Which term best describes one or more database operations that are executed as a single unit?
Using the Customer and Sales_Rep relations shown in the exhibit, you must datermine a relational
algebraic expression that will result in the following relation:
Which of the following relational algebraic expressions would result in this relation?
Consider the Registration relation shown in the exhibit. Which of the following SQL statements
would return all tuples that have course codes beginning with the letter M?
Currently there are no comments in this discussion, be the first to comment!