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1. A well-maintained relational DBMS has a high level of data integrity. What features of a relational DBMS contribute towards this level of integrity?
2. (a) Explain the various functions of RDBMS? Name the different categories of RDBMS users and how they are different from each other.
(b) RDBMS has become most popular Database System world wide? Justify your answer with suitable example.
3. Explain different integrity constrains supported by RDBMS and ORDBMS with suitable examples.
4. Process of normalization is the integral part of designing a database. Justify this statement with suitable database design.
5. Differentiate among on any three of the following giving suitable examples:-
a) Primary Key
b) Candidate Key
c) Alternate Key
d) Unique Key
e) Super Key
Write a SELECT statement that returns these columns from the CustomerAddresses view that you created in exercise 1: CustomerID, LastName, FirstName, BillLine1.
Display all employees' names, last name first, and then first name, and hire date. Order the results by employee name, last name first, and then first name.
Alter the Employee table to establish a foreign key between Employees and Departments.
When should wildcard characters used in queries and list the six types of wildcard characters that can be used in Access queries?
What is an SQL injection attack? Explain how it works, and what precautions must be taken to prevent SQL injection attacks.What are two advantages of encrypting data stored in the database?
prepare a query to show the customer id and customer name in given database.
Explain what is bad about the poor example
How to select the primary key from the candidate keys? How do foreign keys relate to candidate keys? provide examples from either your workplace or class assignments
Write a query to display using the employees table the EMPLOYEE_ID, FIRST_NAME, LAST_NAME and HIRE_DATE of every employee who was hired after to 1 January, 1995.
Write given queries in SQL and relational algebra: Determine cities from which one can fly to Toronto with one change of planes, and using same type of the aircraft for both legs of trip.
Write a SQL statement to display the Major of students with no duplications. Do not display student names.
Write a Query to display the name, department_id of the employee that earns the highest salary in the Employees table.
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