Why DBMS replaced file-based systems - Quick Recap

Recall & Review

beginner

What is a file-based system in data management?

A file-based system stores data in separate files without a central control, making data management and retrieval difficult.

beginner

Name one major problem of file-based systems that DBMS solves.

File-based systems suffer from data redundancy and inconsistency, which DBMS solves by centralizing data management.

intermediate

How does DBMS improve data sharing compared to file-based systems?

DBMS allows multiple users to access and share data simultaneously with controlled access, unlike file-based systems where sharing is limited.

intermediate

What is data independence and which system provides it?

Data independence means the ability to change data structure without affecting application programs. DBMS provides this, unlike file-based systems.

beginner

Why is data security better in DBMS than in file-based systems?

DBMS offers controlled access and user authentication, protecting data from unauthorized use, which file-based systems lack.

What is a key disadvantage of file-based systems?

A Data redundancy and inconsistency

B Centralized data control

C Easy multi-user access

D Automatic backup

File-based systems often have duplicate data stored in multiple files, causing redundancy and inconsistency.

Which system provides data independence?

A DBMS

B File-based system

C Both

D Neither

DBMS allows changes in data structure without affecting applications, providing data independence.

How does DBMS improve data security?

A By removing backups

B By allowing open access to all users

C By storing data in multiple files

D By controlling user access and authentication

DBMS controls who can access data, enhancing security compared to file-based systems.

Which of the following is NOT a reason DBMS replaced file-based systems?

A Data redundancy

B Decreased data duplication

C Data inconsistency

D Limited data sharing

DBMS reduces data duplication; increased data duplication is a problem of file-based systems.

What does DBMS provide that file-based systems do not?

A Multiple separate files

B No data backup

C Centralized data management

D Manual data entry

DBMS centralizes data management, improving control and efficiency.

Explain why DBMS replaced file-based systems.

Think about the problems with storing data in separate files and how DBMS solves them.

List the advantages of DBMS over file-based systems.

Focus on how DBMS manages data differently and better.