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Computers and Technology, 03.03.2020 23:48, diawia
A STUDENT can take many COURSES and a COURSE can have more than one STUDENT enrolled in the course. In this case, both the "student_id" and "course_id" primary keys become foreign keys and primary keys in a new entity called COURSE-STUDENT. What is the main reason for creating a new entity?
a. To reinforce data accuracy
b. To preserve data completeness
c. To eliminate possible data redundancy
d. To achieve data consistency
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Answers: 3
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Computers and Technology, 21.06.2019 16:50, jaueuxsn
3(c). is the following command correct? if not, correct the syntax and explain your answers. you can just rewrite/correct only the wrong parts. (4) select p#, city, zipcode, count(*) from client c, property p, viewing v where c. c# = v. c# and v. p# = p. p# group by p#, city having count(*) > 3;
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Computers and Technology, 23.06.2019 12:40, melaniem50
Curriculum exam to process a resident's payment, you must click on onesite payments home page. from the a. reports b. my settings o c. transactions o d. rent tab
Answers: 1
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A STUDENT can take many COURSES and a COURSE can have more than one STUDENT enrolled in the course....
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