Question 1

Personal databases are designed to support a small group of individuals working together on a project.

Accepted Answer

The answer of Personal databases are designed to support a...

Question 2

An enterprise data model describes the scope of data for only one information system.

Accepted Answer

An enterprise data model describes the scope of data across the entire organization, not just a single information system.

Question 3

Data redundancy is used to establish relationships between data but is never used to improve database performance.

Accepted Answer

Data redundancy can be used to improve database performance by allowing faster access to frequently used data, despite the potential for increased storage requirements and maintenance complexity.

Question 4

A relational database establishes the relationships between entities by means of a common field.

Accepted Answer

A relational database uses keys, such as primary and foreign keys, to establish relationships between tables, which represent entities, by linking them through common fields.

Question 5

The user interface includes languages, menus, and other facilities by which users interact with various system components.

Accepted Answer

The user interface is designed to facilitate interaction between the user and the system, typically through languages, menus, and other tools.

Question 6

Repositories are always used in file processing systems.

Accepted Answer

Repositories are not always used in file processing systems; they are used in database systems to store and manage data, while file processing systems may use simple file storage without a repository.

Question 7

Redundancy increases the risk of inconsistent data.

Accepted Answer

Redundancy can lead to multiple copies of the same data, which may not be updated consistently, resulting in data inconsistency.

Question 8

The failure to implement a strong database administrative function is the most common source of database failures in organizations.

Accepted Answer

The lack of a strong database administrative function can lead to poor management, security issues, and inefficiencies, which are common causes of database failures.

Question 9

A constraint is a rule in a database system that can be violated by users.

Accepted Answer

A constraint is a rule that enforces data integrity and consistency in a database, preventing users from entering invalid data.

Question 10

A user view is how the user sees the data when it is produced.

Accepted Answer

The answer of A user view is how the user...

Question 11

Database development begins with the design of the database.

Accepted Answer

The answer of Database development begins with the design of...

Question 12

Data management technologies are also increasing often used as information systems, as a foundation for analytics or the systematic analysis of data to understand a real-world problem better.

Accepted Answer

Data management technologies are integral to information systems, providing the necessary infrastructure for data storage, retrieval, and processing, which are essential for analytics and understanding real-world problems.

Question 13

A modern database management system automates more of the backup and recovery tasks than a file system.

Accepted Answer

Modern database management systems (DBMS) have built-in features for automated backup and recovery, which are more advanced and comprehensive than those typically available in a basic file system.

Question 14

The term legacy system refers to a newly installed database management system.

Accepted Answer

A legacy system refers to outdated computer systems, software, or technology that is still in use, rather than a newly installed system.

Question 15

One reason for improved application development productivity with the database approach is that file design and low-level implementation details do not need to be handled by the application programmer.

Accepted Answer

The database approach abstracts file design and low-level implementation, allowing programmers to focus on higher-level application logic, thus improving productivity.

Question 16

Organizational commitment to a database project is not necessary for its success.

Accepted Answer

Organizational commitment is crucial for the success of a database project as it ensures adequate resources, support, and alignment with business goals.

Question 17

Cost and complexity are just two of the disadvantages of database processing.

Accepted Answer

Database processing can be costly due to the need for specialized hardware, software, and skilled personnel. It can also be complex, requiring careful design and management to ensure data integrity and performance.

Question 18

Separation of metadata from application programs that use the data is called data independence.

Accepted Answer

Data independence refers to the ability to change the schema at one level of a database system without having to change the schema at the next higher level, which includes separating metadata from application programs.

Question 19

Reduced program maintenance is an advantage of file processing systems.

Accepted Answer

File processing systems often lead to increased maintenance due to data redundancy and lack of data integration, making them less efficient compared to database systems.

Question 20

The data repository assists database administrators in enforcing standards.

Accepted Answer

A data repository can help database administrators enforce standards by providing a centralized location for data management, ensuring consistency, and facilitating compliance with data governance policies.

Quiz 1: The Database Environment and Development Process