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Identify the level within a database system (user, programmer of application software, and designer of the DBMS software) at which each of the following concerns or activities occur:
a. How should data be stored on a disk to maximize efficiency?b. Is there a vacancy on flight 243?c. Could a relation be stored as a sequential file?d. How many times should a user be allowed to mistype a password before the conversation is terminated?e. How can the PROJECT operation be implemented?
Find the average number of books borrowed per member. Take into account that if a member does not borrow any books, then that member does not appear in the borrowed relation at all.
How many entities are shown by this relation?
Write the application for university admissions office. Prompt user for a student's High School Grade Point and an admission test score.
Using your knowledge of the college environment, determine the functional dependencies that exist in the following?
Difference between obsolescent and redundant stocks
You have a company, specializing in managing technology solutions. you have ben just hired by big firm to execute a well-planned strategy.
Database designers stated following dimension of "miniworld"- to be represented in Company Supplier-Part database: company is organized into departments. Each department has unique name, unique number.
Create an entity-relationship diagram and design accompanying table layout using sound relational modeling practices and concepts.
Use technology and information resources to research issues in database systems. Write clearly and concisely about relational database management systems using proper writing mechanics and technical style conventions.
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.
Draw an object-oriented model for a small private airport database that is used to keep track of airplanes, their owners, airport employees, and pilots.
What rules would have to be enforced based on entity type? Choose one entity type and discuss what enforcement is needed by the database or application.
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