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Data Modeling Concepts

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Questions and Answers

What does an entity represent in a data model?

Rules and limitations that define values in the data model

Connections between different types of data

Real-world objects or concepts for which data is stored (correct)

Characteristics that describe the entities

What is the purpose of attributes in a data model?

Establish relationships between entities

Provide details about the data within each entity (correct)

Define allowable values and relationships within the data model

Organize data into tables with rows and columns

How do relationships contribute to a data model?

Define the allowable values and relationships within the model

Provide rules and limitations for data interactions

Organize data into tables with rows and columns

Indicate how entities are related to each other (correct)

What do constraints in a data model primarily ensure?

Data accuracy and integrity Signup and view all the answers

In which type of data model are relationships between tables established using keys?

Relational Data Model Signup and view all the answers

What is the purpose of the Entity-Relationship Model in database design?

Represent entities and their relationships Signup and view all the answers

Which data model represents data with objects and methods for operation on the data?

Object-Oriented Data Model Signup and view all the answers

Why is consistency and integrity important in data modeling?

To maintain data consistency and accuracy Signup and view all the answers

What is the key benefit of understanding the structure of data through a data model?

Ensuring efficient retrieval of information Signup and view all the answers

Which model extends the hierarchical model by allowing records to have multiple parent and child records?

Network Data Model Signup and view all the answers