Muti-Tier application design

Muti-Tier application design

 

Presentation : like HTML / XML , CSS or JS for web

Business Tier : security (like SQL injured), business logic control , validation (like regular expressions) ...

Data Access Tier : supply some interfaces between BT and DB (like  decide to use procedure or SQL connecting string in the programme,use ado.net code to reat/write DB, to control the BT table object or class, CRUD-- create,read,update,delete )

DB Tier : Manage the database, write the procedure in order to improve the performance.

by Royman 29/12/05

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