What is 2-tier architecture, 3-tier architecture?

Answer Posted / ekta

2 Tier Architecture ::
Client & Database is on different system.
Processing is done at client side.
Application layer is at client side.

3 Tier Architecture ::
Apart from Application & database layer there is one more layer present at client side.(eg

Browser).
First tier= presentation tier

Second tier=Application Tier(Business Logic)

Third Tier=Data Tier(Database Server)

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