Non-Functional Requirements of Airline Reservation System:
Performance Requirements:
The performance requirements are as follows:
- System login/logout and all transactions shall take less than 10 seconds.
- Searches shall return results within 5-10 seconds.
- All Bookings shall be processed within 5-10 seconds.
- Application shall support 500 users at a time.
Logical Database Requirements:
There are various functions in the website that require the interface of a database. The three Tables below show the different types of information used by various functions, their frequencies of use, and the data entities and their relationships, respectively.
Expected Frequency of Function Used by Users
The figure below illustrates the anticipated number of users utilizing functions during peak time.
Function | Frequency of Use |
Registration Function | 100 –150 users |
Account login Function | 200 – 300 users |
Search (Schedule & Status) | 250 – 300 users |
Update account info | 50 – 100 users |
Book Flight & Reserve | 50 – 100 users |
Data Entities and their Relationships:
The data entities and the relationships table describe the attributes of the types of data that shall be sent to the database.
Table Names |
Column Lengths |
City Information– Airport Code – Airport Name – City Name – State – Zip code |
10 characters 20 characters 20 characters 15 characters 10 digits |
Flight Bookings– Book Flight ID – Flyer Number – Flight Schedule ID – No of Seats |
10 digits 15 characters 10 digits 10 digits |
Hotel Booking–Hotel name-Hotel ID
-Number of persons |
20 characters 2 digits 2 digits
|
Flight Information– Flight Number – Flight Name – No of seats |
8 characters 20 characters 4 digits
|
Flight Schedules– Flight Number – Flight Schedule ID – Flight Departing Time – Flight Arrival Time – Origin – Destination – Flight Status – Cost – Reserve Seats – Booked seats – Left Seats – No of miles
|
10 digits 20 characters Date time Date time 15 characters 15 characters 15 characters 5 digits 4 digits 4 digits 4 digits 6 digits |
User Information– Username – Password – Address – Zip Code – Phone Number
|
15 characters 8 characters 25 characters 10 digits 15 characters 13 digits |
Design Constraints
The Airline Reservation System shall conform to the following design constraints:
- Able to support all operating platforms like Windows, Linux, Mac etc.
- System logs out user after a ten minute inactivity period.
- System supports all web browsers (i.e. both graphical and non-graphical like Mozilla, IE, Google Chrome).
Reliability:
The system will have redundant hardware. In the event of a website outage, support personnel will respond within 30 minutes. In the event of a less severe problem support personnel will respond within 3 hours.
Availability:
Airline Website application will be available to Customers with access to the Internet.
Security:
Customers will be able to access only their own personal information and not that of other Customers. Payments will be handled through a server to ensure the protection of user’s credit card and personal information.
Maintainability:
This product shall be maintained by an administrator in case of any defect. In addition, any update or change that is made will be changed on server-side computers without any patches required by the Customer.
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