10 Questions
Which tier in the three-tier architecture deals with the actual database management system?
Database server level
What is the first level in the three-tier architecture called?
Client level
Why do we need three tiers in the three-tier architecture?
To enable remote access to databases
What does the application server level in the three-tier architecture deal with?
Application programs and web pages
What is the second level in the three-tier architecture called?
Web server level
Which type of data model describes the database at a very high level and is useful to understand the needs or requirements of the database?
Conceptual Data Model
Which model specializes in entities, relationships, and attributes that are used by database designers?
Conceptual Data Model
What is the purpose of a data model in a database management system (DBMS)?
To summarize the description of the database
What does a data model provide us with?
A transparent picture of data
How many types of relational models are there?
3
Study Notes
Three-Tier Architecture
- The Database Tier deals with the actual database management system.
- The Presentation Tier is the first level in the three-tier architecture.
- The three tiers are needed to separate the presentation, application logic, and data storage for better maintainability, scalability, and flexibility.
Application Server
- The Application Server level in the three-tier architecture deals with the business logic and rules.
Data Models
- A Conceptual Data Model describes the database at a very high level and is useful to understand the needs or requirements of the database.
- An Entity-Relationship Model specializes in entities, relationships, and attributes that are used by database designers.
Purpose of a Data Model
- The purpose of a data model in a database management system (DBMS) is to provide a conceptual representation of the data structures and relationships.
- A data model provides us with a simplified and abstract view of the complex real-world data, which helps in understanding, designing, and communicating the database structure.
Relational Models
- There are two types of relational models.
Test your knowledge on three-tier architecture for databases with this quiz. Learn about the three levels and their functions in this important architectural concept.
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