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What is the role of a DBMS, and what are it advantages? What are its disadvantages?
Convert the table to 3NF. Represent your answer in DBDL. (i.e. Give table name and fields. Underline the primary key. Draw an entity-relationship diagram showing all relationships.)
Perform the conceptual database design using Entity-Relationship model. You must submit the Entity-Relationship diagram of your database and develop queries in the target DBMS
Describe the difference ways of implementing one-to-one relationships. Assume you are maintaining information on offices (office numbers, building, and phone numbers)
Create an update query to select all records in the tblOverPriced, decrease the Price field values by 10%, run and close the query.
What about giving same name to attributes which are in different tables but are not same? For instance, "Description" in both a Course table and a Classroom table.
Write a command to list all the employees hired in 2003 and 2004. Sort the rows by the hire_date column in descending order.
Create Entity-Relationship diagram for a bookstore database, that maintains information about books, professional journals, their authors, and publishers.
The customer is always right -The customer doesn't know what's best. It's the baker's (marketer's) job to educate him. The above statements succinctly point out a subtle battle which rages within the marketing discipline.
Code an Oracle Database trigger to enforce the constraint that an employee can never change his or her department.
Create an ERD and relatioal schema in third normal form based upon the following business rules. (Hint: ensure that all attributes are FULLY DETERMINED by the primary key.) Don't forget to place your normalization arrows on your relational schema.
Consider following opinion shared by some people: database management systems and data-warehousing techniques are the greatest threat to individual privacy in modern times. What is your opinion?
Assume that data warehouse consists of three dimensions time, customer, and cell phone plan, and two measures number of calls and cell phone bill. Sketch a schema diagram for above data warehouse using star schema.
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