Looking for LE/EECS 3421 M & N - Introduction to Database Systems (Winter 2024-2025) test answers and solutions? Browse our comprehensive collection of verified answers for LE/EECS 3421 M & N - Introduction to Database Systems (Winter 2024-2025) at eclass.yorku.ca.
Get instant access to accurate answers and detailed explanations for your course questions. Our community-driven platform helps students succeed!
What does the following query return?
What is the result of the following query on the staff table? SELECT COUNT(DISTINCT DEPTNUMB) FROM staff;
Which query returns the maximum salary from the staff table? (select all that apply)
What does the following query returns?
SELECT C.CUST_ID, C.CUST_NAME, O.ORDER_NUMBER FROM CUSTOMERS C LEFT JOIN ORDERS O ON C.CUST_ID = O.CUST_ID WHERE O.ORDER_NUMBER IS NULL;
What does the following query return?
SELECT E.EMP_ID, E.EMP_NAME, D.DEPT_NAME FROM Employees E FULL OUTER JOIN Departments D ON E.DEPT_ID = D.DEPT_ID;
What is the result of running the following query?
SELECT TOP 1 Salary FROM (SELECT DISTINCT TOP 3 Salary FROM STAFF ORDER BY Salary DESC) AS TORDER BY Salary;What does the following query do?
ALTER TABLE Employees ADD BirthDate DATE;
Which command modifies a column’s data type?
What happens when you execute DROP TABLE Employees?
A relation in 2NF must not contain any transitive dependencies.
Get Unlimited Answers To Exam Questions - Install Crowdly Extension Now!