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Database System: Data vs. Information and Hierarchy

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Database System: Data vs. Information and Hierarchy

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Questions and Answers

Which category of end-users is typically unaware of the DBMS?

Naïve users (correct)

Sophisticated users

Application programmers

Physical Database Designers

What role does the Physical Database Designer play in the database design process?

Decides how the logical data model is physically realized (correct)

Creates the required functionality for end-users

Defines the logical data model

Classifies end-users according to their system usage

What is one of the advantages of using a DBMS related to data control?

Reduced data integrity

Decreased data consistency

Increased data redundancy

Sharing of data (correct)

Which factor is considered a disadvantage of using a DBMS?

Training costs Signup and view all the answers

What is a function of a DBMS in the database environment?

Deciding how data is physically stored Signup and view all the answers

Which type of users are familiar with the structure of the database and DBMS facilities?

'Sophisticated' users Signup and view all the answers

What is the main difference between data and information?

Data are characters or bytes, while information reveals trends or patterns. Signup and view all the answers

What is a 'field' in the context of a database system?

A combination of characters that describe an aspect of a business object Signup and view all the answers

Which level of the hierarchy of data involves a collection of related records?

Records Signup and view all the answers

What is the highest level in the hierarchy of data?

Database Signup and view all the answers

Which characteristic of good information refers to freedom from errors?

Reliable Signup and view all the answers

What does it mean when information is described as 'timely'?

'Timely' signifies that the information is delivered when it is needed. Signup and view all the answers

What is the primary disadvantage of the traditional data approach mentioned in the text?

Limited data sharing Signup and view all the answers

Which term refers to a distinct object in an organization that is to be represented in the database?

Entity Signup and view all the answers

What does DBMS stand for in the context of the database environment?

Database Management System Signup and view all the answers

In a centralized database, where is all the data typically located?

At a single site Signup and view all the answers

What is an attribute in the context of database management?

A characteristic of an entity Signup and view all the answers

Which component of the database environment is responsible for defining, creating, and controlling access to the database?

DBMS Signup and view all the answers