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Which operations need the participating relations to be union compatible?
A UNION, INTERSECTION and DIFFERENCE operations need the participating relations to be union compatible.
Question: Consider the following database relations for a textbook ordering system used by a college bookshop: Book (b-copy#, bname, ISBN#, author, price, subject) Order (s#
Chapter 10a review questions
Create Student DB and perform delete operation? STUDENT (name, student#, class, major) COURSE (course name, course#, credit hours, department) SECTION (section identifier, co
A student entity type has the following attributes,name..
define anomalies and different types of anomalies with example
Define a job scheduling strategy that will meet business requirement of reporting availability by 6am CST for the following cubes? Show the job scheduling dependencies in a pictori
What is the aim of object design The aim of object design is to identify object which the system contains and the interactions among them. The system implements specification
need to get answer for questions 3&4 on this page in part 1
Let us now talk about the relational operations: SELECT The select operation is used to select few specific record from the database based on different criteria, This is a un
What are metrics for choosing the best algorithm? Matrices for choosing the best algorithms are as below: Computational complexity Ease of understand ability and im
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