Answer Posted / varun
there are one tier, two tier, three tier, four tier architecture
0NE TIER :stand alone server (all info in one server, our pc)
TWO TIER : client tier, server tier(web tier, data tier)
THREE TIER : client tier, web tier, server tier(data tier) most of companies use this.
FOUR TIER : client tier, web tier, server tier, data tier.
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