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Problem 1:
Suppose you have a relation schema about teaching classes that has the following attributes: Class, Instructor, Time and Room
Based on your understanding of this scenario, what functional dependencies can you identify that hold on this relation?
Problem 2:
Research the definition of a "minimal cover". Explain it in your own words and give an example.
Assume you manage business activity which needs a new IS with a database. The development team is divided on which DBMS you must use. One faction wishes to use oracle,a second wants to use MtSQL, and a third wants to use SQL server.
Name four attributes that you can use to define a data flow in the bus information system. Name four attributes that you can use to define a data store in the bus information system.
Explain the benefits and current trends of data warehousing and data mining and provide two (2) examples of quality companies successfully using a data warehouse to support your answer.
Which of the following subnet masks would offer 30 usable subnets with a minimum of 2040 usable hosts per subnet? We have been assigned the IP address in the exhibit. Choose the best answer.
How many models of the Titanic have been shipped? What was the date of the first shipment and when was the last shipment sent - Write SQL SELECT statements to retrieve
The relations given below keep track of airline flight information:Flights(flno: integer, from: string, to: string, distance:integer, departs: time, arrives: time, price: real)Aircraft(aid: integer, aflame: string, cruisingrange: integer)
Prepare a report - The report should be related to Business communications.
With the new UNSW timetabling system, the LIC of each course is required to specify what facilities they require in their classrooms as one of the inputs to the timetabling process. Write an SQL function to provide a list of rooms that contain a g..
Explain the use of facts, dimensions and attributes in a star schema model. Explain the use of facts, dimensions and attributes in a star schema model.
Construct an entity-relationship (ER) model for the database. Make sure you include in your model details of entities, relationships, attributes, keys and limits in participation.
The application uses hash tables - for a brief introduction, refer tothese slides . While the approach used by the simulator is very basic (using a dilated simulation clock), it is has been deemed sufficient for the purpose at hand.
Your company wants to encourage carpooling. Create an answer table listing employee name, city and street address (in that order) for employees who live in Crestline.
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