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DBMS Architecture Quiz

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Questions and Answers

Which DBMS architecture divides the whole system into related but independent modules?

Centralized architecture
Decentralized architecture
Hierarchical architecture
n-tier architecture (correct)

In which DBMS architecture is the user directly sitting on the DBMS and using it?

1-tier architecture (correct)
Centralized architecture
Decentralized architecture
Hierarchical architecture

Which architecture provides handy tools for end users and is preferably used by database designers and programmers?

Centralized architecture
Hierarchical architecture
Decentralized architecture
1-tier architecture (correct)

Which is the most widely used DBMS architecture that separates its tiers based on users?

3-tier architecture (C) Signup and view all the answers

In which DBMS architecture does an application access the DBMS, with the application tier being entirely independent of the database in terms of operation, design, and programming?

2-tier architecture (B) Signup and view all the answers

Where does the application server and program that access the database reside?

At the middle tier (B) Signup and view all the answers

In which tier of 3-tier DBMS architecture does only the database reside along with its query processing languages and all relations and their constraints?

Database (Data) tier (A) Signup and view all the answers

What is the main function of the application tier in the multiple-tier database architecture?

To provide an abstracted view of the database to the end user (C) Signup and view all the answers

In the entity-relationship model, what is an entity defined as?

A real-world entity with attributes (A) Signup and view all the answers

Which data model is best used for the conceptual design of a database?

Entity-relationship model (D) Signup and view all the answers

What do mapping cardinalities define in the entity-relationship model?

The number of associations between two entities (C) Signup and view all the answers

Where does an end user sit in the multiple-tier database architecture?

At the application (middle) tier (A) Signup and view all the answers

What does the relational model focus on in a database system?

Defining how data is organized using tables and relationships (D) Signup and view all the answers

What is the fundamental purpose of data models in a database management system (DBMS)?

To define how data is connected and processed in a system (C) Signup and view all the answers

What is the main function of the user (presentation) tier in a multiple-tier database architecture?

To provide an abstracted view of the database to users (B) Signup and view all the answers

What does the middle tier work as in a multiple-tier database architecture?

A provider of abstracted view of the database to end users (C) Signup and view all the answers