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/ ftp.networkinstruments.com / 2015-02-04.ftp.networkinstruments.com.tar / ftp.networkinstruments.com / pub / demos / ObsReportingServerSetup.exe / Common / ObserverReportingServer.chm / images / three_tier_application.png

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Portable Network Graphic  |  2013-04-19  |  162KB  |  814x729  |  16-bit (4,128 colors)

Labels: ashcan | cup | dialog box | monitor | window
OCR: Presentation tier >GET SALES >GET SALES The top-most level of the application TOTAL TOTAL is the user interface The main function 4 TOTAL SALES of the interface translate task and results tc something the user can understand Logic tier This layer coordinates the application processes commands makes logical decisions and GET LIST OF ALL ADD ALL SALES evaluations and performs SALES MADE TOGETHER calculations also moves and LAST YEAR processes data between the two surrounding layers SALE QUERY SALE Data tier SALE SALE Here information is stored and retrieved from database or file system. The information S then passed back to the logic tier for processing and then eventually back to the user Storage Database tasks surroundina

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