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Relational Model in Data Management

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Questions and Answers

What is the relational model's approach to representing data?

Using a collection of documents

Using a collection of arrays

Using a collection of tables (correct)

Using a collection of graphs

Why is the relational model widely adopted?

Due to its high complexity

Due to its low-level data storage details

Due to its widespread availability

Due to its conceptual simplicity (correct)

What is used to make data from a relational database available to users?

No-SQL databases

Query languages (correct)

Data structures

Graph databases

Which formal query language forms the basis for SQL?

Relational algebra (D) Signup and view all the answers

What does Chapter 3 provide an overview of related to SQL?

SQL data manipulation language (A) Signup and view all the answers

How does the relational model describe data?

At the logical and view levels (C) Signup and view all the answers

What abstraction does the relational model provide by describing data at the logical and view levels?

Conceptual level (D) Signup and view all the answers

In the relational model, what plays a crucial role in representing both data and the relationships among that data?

Keys (C) Signup and view all the answers

Which query language is introduced in Chapter 2 as a formal query language forming the basis for SQL?

Relational Algebra (D) Signup and view all the answers

What is a primary focus in Chapter 3 regarding SQL?

SQL Data Manipulation (C) Signup and view all the answers

Which aspect has contributed significantly to the widespread adoption of the relational model?

Conceptual simplicity (D) Signup and view all the answers

What is essential for users to specify requests for retrieving and updating data from a relational database?

Query Languages (B) Signup and view all the answers

What is the primary focus of relational databases according to the text?

Abstracting low-level details (C) Signup and view all the answers

Which basic concepts are introduced in Chapter 2 as underlying relational databases?

"Relational Algebra" Concepts (D) Signup and view all the answers