Maurice Tutor

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    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Computer Science Posted 26 Jul 2017 My Price 4.00

relational database

Consider the relational database of Figure 6.22, where the primary keys are underlined. Give an expression in the relational algebra to express each of the following queries:

a. Find the names of all employees who work for “First Bank Corporation”.

b. Find the names and cities of residence of all employees who work for “First Bank Corporation”.

c. Find the names, street addresses, and cities of residence of all employees who work for “First Bank Corporation” and earn more than $10,000.

d. Find the names of all employees in this database who live in the same city as the company for which they work.

e. Assume the companies may be located in several cities. Find all companies located in every city in which “Small Bank Corporation” is located.

 

Answers

Maurice Tutor
(5)
Status NEW Posted 26 Jul 2017 06:07 PM My Price 4.00

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