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Describe the difference ways of implementing one-to-one relationships. Assume you are maintaining information on offices (office numbers, building, and phone numbers) and faculty (numbers and names). No office houses more than one faculty member; no faculty member is assigned more than one office. Illustrate the ways of implementing one-to-one relationships using offices and faculty. Which option would be best in each of the following situations?
a. A faculty member must have an office, and each office must be occupied by a faculty member. b. A faculty member must have an office, but some offices are not currently occupied. You must maintain information about the unoccupied offices in an Office relation. c. Some faculty members do not have an office but all offices are occupied. d. Some faculty members do not have an office, but some offices are not occupied.
Need a system that networks its 3 campuses in the US and one campus in Singapore. Transaction data for all campuses should be available to all locations. In addition, students should be able to use the Internet to view classes, enroll, register, and ..
Carry out the following tasks below by using the correct SQL statements. Create the statements in Oracle by using the following steps (SQL > SQL commands > Enter Command). Determine the columns that make up the primary key of the l_lunch_items tabl..
You are interested in analyzing some hard-to-obtain data from two separate databases. Each database contains n numerical values.
Design a Database schema
Describe the database and describe the four characteristics of the database? Explain the Relational Database and generate a relational database for five employees.
Produce a scatterplot of Rent vs. Size (square meters of the apartment) for the rental data in rent.
Illustrate relational algebra expressions for names of all salespeople, names of all salespeople having ORDER row and names of salespeople not having ORDER row.
There are many kinds of relationships in a design model of a database. Why is it important to classify each of these types in an ERD Model?
Write the name(s) of employee(s) who works(work) on every project located in Houston. Write the name(s) of employee(s) who only works(work) on every project located in 'Houston.'
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.
Why do you believe that views by themselves are insufficient for protecting access by unauthorized users?
Compute the functional dependencies which exist in following table. After determining the functional dependencies, transform this table to an equivalent collection of the tables which are in third normal form.
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