a) Two Tier Client-Server Architecture
-A client program may connect to several DBMSs.
-Other variations of clients are possible: e.g., in some DBMSs, more functionality is transferred to
clients including data dictionary functions, optimization and recovery across multiple servers, etc. In such situations the server may be called the Data Server.
b)Three Tier Client-Server Architecture
-Common for Web applications
-Intermediate Layer called Application Server or Web Server:stores the web connectivity software and the rules and business logic (constraints) part of the application used to access the right amount of data from the database server
-Acts like a conduit for sending partially processed data between the database server and the client.
-Additional Features- Security:encrypt the data at the server before transmission and decrypt data at the client.
jim items answered the question on March 12, 2019 at 09:00
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