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Consider a student club or organization in which you are a member. What are the data entities of this enterprise? List and define each entity. Then, develop an enterprise data model showing these entities and important relationships between them.
Create a data warehouse for electronics store chain. The chain has 20 stores in 5 cities. Each store has different sections including computers, DVDs, TVs, audio, home appliances etc.
Code an Oracle Database trigger to enforce the constraint that an employee can never change his or her department.
What is meant by cardinality of a relationship? Your answer requires to be thorough and specific. Be sure to include the two types of cardinality
Write a SELECT statement that returns two columns: VendorName and PaymentSum, where PaymentSum is the sum of the PaymentTotal column.
What actions does a referential integrity constraint prevent from occurring when data is inserted in a table that contains this constraint?
Using your knowledge of the college environment, determine the functional dependencies that exist in the following?
What criteria would you use in selecting a life-cycle model for the project?
How and why did database management systems become the organizational data management standard? Describe some advantages of database approach over file-system approach.
Examine different sales transactions. Design a context diagram and a level-0 diagram that represent the selling system at the store.
Sketch a DFSA for identifiers which contain only letters and digits, where identifier should have at least one letter, but it need not be first character.
Write down the SQL code in order to carrying out the following requests. Display all the data in each of the four tables. Do not display the foreign key columns.
What is the importance to have a button that takes you back to the main page on each web page? How does dead end or orphan pages affect the continuity of a website?
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