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Consider the following relational schema for a library:
Write the following queries in relational algebra.
a. Find the names of members who have borrowed any book published by "McGraw-Hill".
b. Find the name of members who have borrowed all books published by "McGraw-Hill".
c. Find the name and membership number of members who have borrowed more than five different books published by "McGraw-Hill".
d. For each publisher, find the name and membership number of members who have borrowed more than five books of that publisher.
e. Find the average number of books borrowed per member. Take into account that if an member does not borrow any books, then that member does not appear in the borrowed relation at all.
Explain reasons for consulting different kinds of sources on the same subject.
Topic: Business Process Reingineering 1. Search the Web and locate three (3) Web sites that relate to the topic. These sites could be white papers or research documents found on research databases, commercial or non-commercial sites that have somethi..
The debate between utilizing paper or plastic in the retail market has and will always be around. The majority of grocery stores offer you the choice of paper or plastic, and some stores are even moving towards a more environmental friendly reusable ..
Give a table showing, for the first 15 seconds, what A receives, what A sends, what R sends, R's queue, and what R drops.
Construct a vector containing all of the even numbers between 6 and 33, inclusive of the end points. Store your answer in the variable evens. (Note: 33 is not an even number)
The ADC contained within the 9S12G128 can be configured for several different digital output bits. Which is not the correct configuration?Question 3: What type of error is associated with an ADC that does not have a straight-line transfer function?
American Express discloses the following pension footnote in its 10-K report. How much pension expense does American Express report in its 2005 income statement?
Which is used to keep the call by reference value as intact?
Assignment On Mobile App (Work Breakdown Structure), This assignment contains two (2) deliverables: a summary document to be delivered in a word processor document format and a Work Breakdown Structure (WBS) to be delivered in a project file.
Extracting Company's Data Using Web Data Extractor
Detailed Description of Learning Activity
Define a specialized representation language to describe the activities of a public library. This language will be a set of concepts and relations using conceptual graphs. Do the same thing for a retail business.
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