Flashcards : Fundamentals of Data Modeling and Database Design — 9 cartes

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1Question

Data Model — importance?

Réponse

Simplifies complex data, aids design and communication.

2Question

Data Model — importance?

Réponse

Simplifies data complexity, aids design.

3Question

Data Model Components — includes?

Réponse

Entities, attributes, relationships, constraints.

4Question

Entity — role?

Réponse

Object about which data is stored.

5Question

Relationship types — examples?

Réponse

1:M, M:N, 1:1.

6Question

Business Rules — purpose?

Réponse

Define data constraints and operations.

7Question

Data Abstraction Levels — components?

Réponse

External, conceptual, internal, physical.

8Question

Object-Oriented Model — feature?

Réponse

Uses objects with attributes and methods.

9Question

Hierarchical vs Network Models — difference?

Réponse

Hierarchical: tree structure; Network: graph structure.

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1. What is a data model primarily considered as in the context of database design?

2. Which component of a data model represents objects or things for which data are stored?

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