architecture model, 2-tier, 3-tier and 4-tier data warehouse

2-TIER ARCHITECTURE(Contd)  Two parts: 1) Client Application (Client Tier) 2) Database (Data Tier)  On client applicatio...Advantages:  Easy to maintain and modification is bit easy  Communication is faster Disadvantages:  Performance will ...3-TIER ARCHITECTURE  Web based application  Three layers: 1) Client layer 2) Business layer 3) Data layer Client Layer  Contains UI part of our application  This layer is used for the design purpose where data is presented to ...Business layer  All business logic written like validation of data, calculations, data insertion etc…  This acts as a i...Data layer  Actual database is comes in the picture  Contains methods to connect with database and to perform insert, u...Advantages  Performance – Because the Presentation tier can cache requests, network utilization is minimized, and the lo...Advantages(contd)  High degree of flexibility in deployment platform and configuration  Improve Data Integrity  Impro...If this presentation helped you, please visit our page facebook.com/baabtra and like it. Thanks in advance. www.baabtra.c...

4 tier architecture

 in a 4 tier architecture Database -> Application -> Presentation -> Client Tier .. where does the BI layer fit in? i just want to add BI piece to something like below but I am not sure how to proceed.

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