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Write the following queries in relational algebra, using the university schema.
a. Find the names of all students who have taken at least one Comp. Sci. course.
b. Find the IDs and names of all students who have not taken any course offering before Spring 2009.
c. For each department, find the maximum salary of instructors in that department. You may assume that every department has at least one instructor.
d. Find the lowest, across all departments, of the per-department maximum salary computed by the preceding query.
Use at least three (3) quality resources in this assignment. Note: Wikipedia and similar Websites do not qualify as quality resources.
To learn more about e-mail client programs, perform the following actives: Open a browser and search the Web for free E-mail client programs. Visit several of the home pages associated with these programs and make note of the following informatio..
Give an asymptotic formula for each of the recurrence equations given below, using big "Θ" rather than just big "O" for better results when possible.
The Banking e-Teller system allows bank customers to perform ATM transactions from their cell or smart phones. BET will allow customers to check balances, make remote photo capture check deposits, and perform balance transfers to their checking or..
Identify the communication protocols used in a large hospital organization.
What does a spreadsheet consist of
Suppose we want to determine if the string s=s1s2...sk is a substring much larger string a1a2...an. One approach is to compute h(s) with some hash function h.
Determine whether or not it is not possible for microprocessors to perform calculations without an Arithmetic and Logic Unit (ALU)
Use McNaughton's wrap around rule to construct a preemptive
A business company wants to computerize some of the job processes currently preformed manually by its employees. You are hired as an Interface design professional to come up with a user interface.
Create user documentation for the nontechnical personnel. Include an overview of features of the application as well as instructional materials. Screen shots should be included for clarity as well.
Create a program that asks users to enter the name of their favorite team. Have the program display this team's name. Then have program ask the user to enter the name of their five previous oponents,
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