# What is the value of using role names to describe the participation of an entity type in a relationship type?

QUESTION:

What is the value of using role names to describe the participation of an entity type in a relationship type?

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## Why can total participation of an entity type in a relationship type also be referred to as existence dependency of that entity type in that relationship type?

QUESTION: Why can total participation of an entity type in a relationship type also be referred to as existence dependency of that entity type in…

## Why can total participation of an entity type in a relationship type also be referred to as existence

QUESTION: Why can total participation of an entity type in a relationship type also be referred to as the existence dependency of that entity type…

## What is the relationship type? How does a relationship type differ from a relationship instance?

QUESTION: What is the relationship type? How does a relationship type differ from a relationship instance?

## What is a unique identifier of an entity type? Is it possible for there to be more than one unique identifier for an entity type?

QUESTION: What is a unique identifier of an entity type? Is it possible for there to be more than one unique identifier for an entity…

## What is a unique identifier of an entity type? Is it possible for there to be more than one unique

QUESTION: What is a unique identifier of an entity type? Is it possible for there to be more than one unique identifier for an entity…

## Figures 5.4, 5.7, and 5.39 each show the decomposition of a ternary relationship. Explain why the entity types SCHEDULE and PRESCRIPTION in Figures 5.4

QUESTION: Figures 5.4, 5.7, and 5.39 each show the decomposition of a ternary relationship. Explain why the entity types SCHEDULE and PRESCRIPTION in Figures 5.4…

## Figures 5.4, 5.7, and 5.39 each show the decomposition of a ternary relationship. Explain why

QUESTION: Figures 5.4, 5.7, and 5.39 each show the decomposition of a ternary relationship. Explain why the entity types SCHEDULE and PRESCRIPTION in Figures 5.4…

## One way to extract silver from acanthite and argentite, both have silver sulfide as the main component of each ore, is by reduction with lead.

QUESTION: One way to extract silver from acanthite and argentite, both have silver sulfide as the main component of each ore, is by reduction with…

## What is meant by the “degree” of a relationship?

QUESTION: “What is meant by the “degree” of a relationship”?

## Discuss the difference between existence dependency and identification dependency?

Question: “Discuss the difference between existence dependency and identification dependency”?