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What is object identity? An object retains its identity even if some or all the values of variables or explanations of methods change overtime.
What is meant by the degree of relationship set? The degree of relationship type is the number of participating entity types.
Object-based Models: Use objects as key data representation components . Examples:- Entity-Relationship Model: It is a collection of real world objects known as entitie
The data of a view is not physically stored, but derived from one or more tables. True the data of a view is not physically stored
Ways for Selecting Data Structure Algorithms operate on data structure. Therefore, selection of the best algorithm means selecting the best data structure from whole bunch. Th
Scenario: You are a freelance database designer who has just been contacted by a small software development company named Altair Software. The president of the company has asked
Define Signal. It allows methods to respond to events triggered by themselves or by other processes. Each signal corresponds to an exacting event. A signal is represented in Sy
Define the Division Operation of Relational Algebra Let R be a relation comprising attributes (A1,...Ap,Ap+1,...An) and S comprising attributes (Ap+1,...An) DEF: Division
entity relationship diagram about finance
What is Primary key? Primary Key - Primary key is one of the candidate keys which uniquely identifies each row in the relation.
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