written 5.7 years ago by | • modified 5.7 years ago |
Subject: Mobile Computing
Difficulty: Medium
Marks: 4 Marks
written 5.7 years ago by | • modified 5.7 years ago |
Subject: Mobile Computing
Difficulty: Medium
Marks: 4 Marks
written 5.7 years ago by |
First Tier/ Layer
• User Interface/Presentation Layer – deals with the user facing device handling & rendering.
• This tier includes a user interfacing components like Textbox, Labels, Checkboxes, etc.
Second Tier/Layer
• Process Management/application Layer – deals with Business logic & Rules.
• It is capable of accommodating hundreds users.
• The middle process management tier controls transactions & asynchronous queuing to ensure reliable completion of transaction
Third Tier/Layer
• Database Management/Data Tier – deals with DB management & access.
• The three tier architecture is better suited for an effective networked client / server design
• It provides increased performance , flexibility, maintainability, reusability, & scalability
• These characteristics encertain the use of 3 tier architecture useful for internet applications & net centric systems
• To design a system for mobile computing , we need to keep in mind that the system will used through any network, any bearer, any agent, any device etc.