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What is an ERD?
Write a short note on oracle Instance? Oracle Instances: An instance is the (executed) Oracle software and the memory they use. It is the instance which manipulates the data s
Differentiate between various levels of data abstraction? Data Abstraction - Abstraction is the procedure to hide the irrelevant things from the users and represent the rele
Logical Operators Rules of Precedence: Order evaluated Operator 1 All comparison operators 2
Define union compatibility? Explain why INTERSECTION of two relations cannot be performed if they are not union compatible? Two relations R(A1, A2,-------, An) and S(B1, B2,--
Law Associates is a large legal practice based in Sydney. You have been asked to design a data model for the practice based upon the following specification: The practice emplo
What is conceptual model ? A conceptual model is a independent of both hardware and software.
what is query processing?
Load sample data into the database tables design and test queries to return the following information • All rows and columns for employees • All rows and columns for customers •
what should be included in this???
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