What is 3 tier architecture with example?

What is 2 tier and 3 tier architecture?

Two-tier architecture consists of two layers : Client Tier and Database (Data Tier). Three-tier architecture consists of three layers : Client Layer, Business Layer and Data Layer. … Two-tier architecture runs slower. Three-tier architecture runs faster.

What is a 4 tier architecture?

The four layers of four-tier architecture are presentation layer (PL), data service layer (DSL), business logic layer (BLL), and data access layer (DAL). … The other one is the presentation layer located in client. The characteristic of the four-tier architecture is as follows.

What is a 3-tier architecture?

Three-tier architecture is a well-established software application architecture that organizes applications into three logical and physical computing tiers: the presentation tier, or user interface; the application tier, where data is processed; and the data tier, where the data associated with the application is …

What are the three levels of architecture?

The three levels present in this architecture are Physical level, Conceptual level and External level.

What is the advantage of 3 tier architecture over 2 tier?

Advantages of 3 tier architecture

Offers higher flexibility as far as configuration and platform deployment is concerned. It improves data integrity. It offers higher level of security as client does not have access to the database directly. It is easier to maintain and do any modification.