A variable cannot be sufficiently described by the word "type." Or to put it another way, every variable has some kind of attributes and data types. What is the best approach to describe any variable's characteristics using the notion that makes this possible?

A variable cannot be sufficiently described by the word "type." Or to put it another way, every variable has some kind of attributes and data types. What is the best approach to describe any variable's characteristics using the notion that makes this possible?

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

Enhanced ER Model

The enhanced ER model is an abbreviation for Enhanced Entity-Relationship (EER) model. As you know, the entity-relationship (ER) model is a pictorial illustration of the relationship between various entities of a domain. In the case of a large amount of data with multiple interrelated entities, the ER diagrams become complex and tough to interpret. For such cases, the need for enhancement in the ER model was observed, and thus, the EER model was designed.

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A variable cannot be sufficiently described by the word "type." Or to put it
another way, every variable has some kind of attributes and data types. What is
the best approach to describe any variable's characteristics using the notion
that makes this possible?

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