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Consider the following BCNF relations, which describe departments in a company and employees:
You are told that the following queries are extremely important:
? List the names and ids of managers for each department in a user-specified location, in alphabetical order by department name.
? Find the average salary of employees who manage departments in a user-specified location. You can assume that no one manages more than one department.
1. Describe the file structures and indexes that you would choose.
2. You subsequently realize that updates to these relations are frequent. Because indexes incur a high overhead, can you think of a way to improve performance on these queries without using indexes?
Describe why an analyst needs to understand how people think, how they learn, how they react to change, how they communicate, and how they work.
show the background on the layer beneath
Explaining the most common security threats, modern threats to current Client and Network Operating Systems, Encryption, Authentication, and Hashing. Include the narrator notes as a separate attachment.
Explain, using the definition of composition of relations on a set why the ordered pair (b, d) is or is not an element of the composition of relations R and S (denoted S o R).
How can these two concepts be separated in SQL 2008?
Your challenge is to . Write just a few sentences and see if your classmates can add on. write a rap about classes that rivals the JavaDev group
Discuss the various types of inner join operations.
You work for a network consulting firm and you have been asked to create a guide for firewall selection. Create an outline for a section that lists and defines the most important parameters of firewall functions, such as throughput.
Prepare a script to go along with the slide presentation that could be read to provide an in-depth discussion of the topics highlighted on the slides. Research the topics above, using your textbook, information provided in class, and resources pro..
What is the difference between Keynes and Say's law?
Many new technologies appeared in the last 15 years including the Internet and e-mail. Many other technologies are used for communication and collaboration.
Using a conductive material, such as aluminum foil, construct a Faraday cage. Make it big enough to hold a cellphone or portable FM radio receiver and con?rm that it blocks RF signals to such devices. Next, experiment with the size of holes in the ex..
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