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Questions and Answers

What is the purpose of a DBMS catalog in a database system?

To provide a conceptual view of the database

To manage the relationships between different entities in the database

To store the actual data in the database

To store the description of the database such as data structures, types, and constraints (correct)

What does program-data independence in a database system allow?

It allows programs to directly modify the database contents

It imposes restrictions on accessing data from different programs

It links programs to specific data structures in the database

It enables changing data storage organization without changing the DBMS access programs (correct)

Which characteristic of a database system allows users to interact with a conceptual view of the database?

Data Abstraction (correct)

Insulation between programs and data

Self-describing nature

Meta-data storage

What is meta-data in the context of a database system?

Description of the database including data structures, types, and constraints Signup and view all the answers

How do some newer NOSQL systems differ in terms of meta-data handling?

They eliminate the need for meta-data by not storing any descriptions Signup and view all the answers

What does insulation between programs and data allow in a database system?

Changing data structures without affecting access programs Signup and view all the answers

In the context of a database system, what is meant by 'program-data independence'?

'Program-data independence' allows changes in storage without affecting access programs Signup and view all the answers

What is the main role of a data model in a database system?

To provide a conceptual representation of the data stored in the database Signup and view all the answers

What does 'Data Abstraction' achieve in a database system?

Presents users with a conceptual view of the database Signup and view all the answers

chapter1

Choose a study mode

Podcast

Questions and Answers

What is the purpose of a DBMS catalog in a database system?

What does program-data independence in a database system allow?

Which characteristic of a database system allows users to interact with a conceptual view of the database?

What is meta-data in the context of a database system?

How do some newer NOSQL systems differ in terms of meta-data handling?

What does insulation between programs and data allow in a database system?

In the context of a database system, what is meant by 'program-data independence'?

What is the main role of a data model in a database system?

What does 'Data Abstraction' achieve in a database system?

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