4-TIER PROJECT


Posted Date:     Total Responses: 0    Posted By: kiran   Member Level: Bronze   Points/Cash: 2   


i have implemented the simple update ,delete, insert data from web to database application using 4-tier architecture.
first layer- PRESENTATION LAYER (UI)
NEXT layer- BUSINESS LAYER
IT COMPRISES OF 1.BUSINESS LOGIC LAYER (BLL) ITS SECOND LAYER
2.BUSINESS ENTITIES (BE) ITS THIRD LAYER

FOURTH LAYER: DATA ACCESS LAYER (DAL)

WHEN YOU REQUEST THE INFORMATION IN USER INTERFACE, IT SEND REQUEST TO BUSINESS LAYER. In-turn its send request to DAL LAYER where it retrieves required data from database and send its to BL from their to UI layer.

ADVANTAGES OF IMPLEMENTED THE PROJECT IN TIERS IS AS FOLLOWS:
1. SIMPLE STRUCTURE
2. EASY TO DEPLOY
3. EASY TO MAKE CHANGES LIKE CHANGING DATABASE SERVER WITHOUT CHANGING OTHER LAYERS INFORMATION ACCORDINGLY


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