Airline Reservation System Ars Software Requirements Specifications Computer Science Essay

Air beginning Reservation System Ars Softw be Requirements Specifications Computer experience EssayAirline bookings clay (ARS) is a online packet application utilise to reserve and retrieve breeding and perform transactions related to blood break work through. Originally designed and performed by airways, ARSes were later developed for the use of locomotion agencies. Major ARS operations that book and sell slates for multiple skyways atomic minute 18 k at a sentence as Global distribution dusts (GDS). Airlines have divested most of their luff holdings to give GDS companies, who make their administrations entrance m geniusyible to consumers d 1 Internet gateways. Modern GDSes atomic add together 18 providing the go like booking hotel rooms and rental cars as well as airline fines. They similarly provide opening to railway reservations in slightly markets although these argon non always integrated with the main corpse.REQUIREMENTS DOCUMENT maiden we are dev eloping a Software Requirements Specification (SRS) document that specifies what an airline reservation dodge should and should not do. The SRS document is divided into five sections to witSystem ObjectivesMainly we discuss the goals and objectives of the frame categorized based on the stancepoint of the airline family and the customer. They help in a top-down development of the SRS.System ContextThis section clearly depicts the environment and boundaries of the ARS and the entities with which it interacts. It helps us see how the transcription fits into the breathing scheme of things. What the system bequeath do by itself and what it expects saucily(prenominal) entities to do is clearly delineated.Functional RequirementsThese call forments states the functions of the system what it should do and what it should not. This go out includes the most common requirements of the customer in addition to or so additional features. like reserving just the tickets, rescheduling tickets and so forth Freedom from ambiguity and navigability were kept in mind tour documentation. A consistent termino put downy has been followed throughout and the basis are explained in the appendix. The subsections follow a logical sequence that reflects the documentary world. For example, a customer cannot reschedule a ticket unless he has bought superstar rather and cannot misdirect one unless he has breached its availability.Non-functional RequirementsThese are persona requirements that stipulate the performance levels required of the system for various kinds of activities. Numerical demean and upper limits set conditions on the response ms, assenting ms etc of the system. Sometimes, tradeoffs are necessary among various non-functional requirements.Future RequirementsAs technology improving side hearty day to day, drug substance ab exploiters deals are in addition increasing.so we have to modify our applications time to time in order to satisfy the customers .These are the specifications which are not provided for at once in the current version of ARS but which could be incorporated into prospective versions. Some of these need advanced technologies and larboards with other systems. The ARS could be designed in future to enhance the existing capabilities or add entirely radical ones.The assumptions and limitations of the ARS have been interspersed in the SRS to posit the same in their proper context.REQUIREMENTS analysis DOCUMENT1. System Objectives1.1 The Airline Reservation System (ARS) is a software application to assist an airline with transactions related to making ticket reservations, which includes blockade, reserving, canceling and rescheduling tickets.1.2 From the viewpoint of the airline 1.2.1 Minimize repetitive work done by the system administrator and reservation clerks.1.2.2 stay fresh consistency among different access modes, e.g. by phone, by net, at the study desk and across different forcible locations. The substance ab exploiters should be basically taken through the same stairs by the system as they go through in conventional desk-reservation systems.1.2.3 Maintain customer information in chemise of emergency, e.g. public life cancellation due to intemperate weather. The profile can also be used by the airline comp either(prenominal) to track substance ab drug user preferences and spark patterns to serve them soften, plan routes, for better marketing and efficient scheduling of feathers.1.2.4 Maximize the revenue of the airline company by various means1.2.4.1 Increase awareness among frequent travelers active various special offers and discounts.1.2.4.2 Minimize the fall of vacant seating on a escape cock and maximize trajectory capa city utilization.1.2.4.3 Maintain the potential to adopt a flexible pricing policy. The price of the tickets should be dynamically determined based on how early, before the get word of termination, the customer buys the ticket.1.3 A surv ey conducted by airline companies shows that users of an existing reservation system would move favorably to an ARS that satisfied or helped them satisfy the adjacent objectives1.3.1 Reduce drift and frustration for travelers in scheduling a switch on, especially by cut the search effort for the flight they need to take.1.3.2 Show all come-at-able combinations and itineraries unattached for a pair of phone line- coating cities.1.3.3 Reduce redundancy in the information required from the customers in order for them to buy tickets, create user accounts etc.1.3.4 Check the well-groundedity of stimulation data and give a feedback to the user in field of study of errors or inconsistency.1.3.5 Provide flexible access modes to users internet, telephone, PDA.1.3.6 defend customers privacy concerns.1.3.7 Make it easy for travelers to cheque the ticket status or make adjustments to their slip up.2. System Context2.1 The ARS will provide the followers types of easy-to-use, inte ractive, and primordial graphical and telephonic user interfaces.2.1.1 The ARS will provide an easy-to-use, a priori Graphical user user interface (GUI) as part of the Clerk/Administrators working desktop environment.2.1.2 The ARS will also provide an interactive GUI, on the World Wide blade for the general customers.The supra deuce ARS interfaces shall help provide the following functionalities to the users access to the ARS to go bad the flight schedule, availability of seating area, ticket price and to block, reserve, cancel, and reschedule tickets.The ARS will also provide an easy-to-use, simple telephonic user interface, which can be accessed by the customers through telephone or cell phone from anywhere. This interface shall provide access, only to the following functionalities, namely, limit flight schedule and check ticket status including any mixture in the flight timings. The functionality operable through this telephonic interface is limited because of securit y constraints.2.2 The system and its environment and the interactions among them are depicted in the diagram below.DB-ReservationsFlight enumeration Database customerVia WebDB- drug userDB-ScheduleINTERFACECWDB-GeographyARS softwareINTERFACE CpCustomerVia PhoneINTERFACE AAdministratorThe closed boundary above clearly delineates the system and the environment. The diagram shows the interactions between the ARS software and the databases inside the system. on that point are three databases internal to the system and which the system maintains. DB-user is the database containing all the in-person information of the registered users of the ARS. This can be up run acrossd by the user by log in to the system. Information from this database is used during transactions like charging the denotation visiting card etc. DB-schedule is a copy of the flight schedule database. The latter exists on an individual basis and is up involvementd by a flight scheduler system which is out of scope of the ARS. DB-schedule is up go throughd with the in style(p) status of the flight schedule database whenever there is any change in the latter. For example, if a flight has been added to the schedule between two cities on Tuesdays, DB-schedule gets updated with this change through a process with which we are not concerned. It is external to the system and is out of the scope of this SRS. DB-schedule also contains the base prices of tickets for various flight builds. DB-reservations are a database containing information regarding the routine of seats easy on each degree on different flights. It has provision for marking how many of the silent seats have been occlude but not yet bought. DB-reservations should update itself using DB-schedule, for example, if a new flight is added. DB-geography is a database, which contains information some the cities and townships serviced by the airline. The distance between all cities and towns is contained in a ground substance form. Th ere are three interfaces, one for the administrator, one for the customer via web and another for the customer via phone. The administrator can update DB-schedule with any changes in the base prices of flight tickets. The system uses a pricing algorithm and dynamically determines the actual price from this base price depending on the date of reservation vis--vis date of handout. The customer interfaces (web and phone) enable multiple functions which are described in the following section section 3.3. Functional RequirementsUser AccountsRegistration and earthly concern of user profileChecking AvailabilityMaking Reservations/Blocking/ getationConfirm tag endReschedule TicketCancellationUpdate visibility insure Ticket StatusQuery Flight DetailsTelephone accessUser AccountsThe passenger, who will henceforth be called the user, will be presented with 3 choices by the reservation system, as the number one step in the interaction between them. A user can choose one of these and his ch oice would be governed by whether he is a guest or a registered user and whether he wants to check the availability of tickets or also block/buy them. The terms registered user and guest are described below.A user who has traveled by the airline in front would have been given a user id and a password. He would have his personal information stored in the database referred earlier as DB-user. This personal information would be henceforth referred to as profile. such(prenominal) a user with a profile in DB-user shall be called a registered user. A registered user will be able to check the availability of tickets as well as block/buy a ticket by logging into the system.A new user, on the other hand, would either have toregister himself with the system by providing personal information orlog into the system as a guest.In fibre of a, the new user becomes a registered user.In lineament of b, the new user would remain a guest.A guest can only check the availability of tickets and cannot block or buy tickets.But a registered user can also act as a guest if he only wants to check the availability of tickets. Availability of tickets always refers to viewing the flight schedule for given days, the price of tickets and any discount offers. The system shall present the user with an pickaxe to exit from the system at any time during the following processes.Registration and creation of user profileThe system shall require a user to register, in order to carry out any transactions with it except for checking the availability of tickets. It will ask the user for the following information at the least a user id, a password, basic name, last name, address, phone number, email address, sex, age, preferred credit card number. The system will automatically create a sky miles field and initialise it to zero in the users profile.Checking AvailabilityAfter logging in a user (either a registered user or a guest), the system shall bay him to enter the following details origin ci ty and destination city. urban center is a generic term and refers to a city or town as the national may be. The origin and destination cities would be entered as text. The system shall instantaneously refer to the flight schedule database, referred to as DB-geography earlier, and check if there is any ambiguity with the names of the cities. In case there are more than than two cities with same name as entered by the user, the system shall disputation all of them (with more qualifications) and ask the user to distinguish one of them. In case, either the origin or destination cities are not listed in DB-geography as be directly serviced by the airline, the system shall suggest the nearest city to which service is available, including the distance of the destination city from this nearest city.After the origin and destination cities are ascertained, the system shall in a flash access the flight schedule database, referred to as DB-schedule , and checks if there is a direct ope rational service between the two cities. If not, the system shall suggest potential routes and transfer points using a route call forion algorithm. The user shall immediately be presented with a choice of either selecting one of the routes. In case he selects a route, the system shall fill in the intermediate bear over points and create a multiple propel itinerary for the user.The system shall at once ask the user to enter the following details class, unidirectional orround trip, departure date and the number of adult passengers, children and oldercitizens.Class refers to business class/first class/club class/smoking/non smoking. This choice shall be do by the user through a drop down menu indicating all the possible combinations of choices. one-way/round trip shall be either a drop down menu or a check box selection. Departure date refers to either a single date or a hurtle of dates, entered through a calendar-like menu. This menu shall not show dates in the historic or t hose dates that are to a fault ahead in the future(as determined by the airline policy). In case, the trip is a round trip, the system shall also ask the user to enter the departure date on the present trip. Having taken all the above input from the user, the system checks for any ill-considered entries like the departure date on the return trip being earlier than the departure date on the onward trip. In case of incompatibility, the system shall pompousness a suitable error message and lively the user to enter the information correctly. Having taken all of the information ,the system shall flat access the flight schedule database DB-schedule and queries it using the input provided by the user. The system queries the reservation database DB-reservations to check which of the flights on the schedule have seats available. The system displays the results in a suitable form (a tabular form) with the following information depicted for each flight number the flight number, departu re time in origin city, arriver time in destination city, the duration of the flight (taking into account the possibility of a change of time zone) and the number of seats available on that flight.There can be several flights between two cities and all of them will be listed for the peculiar(a) date that the user wants to depart from the Origin City. In case, the user has entered a range of dates, the system shall display all the flights for all those dates in the range.If the user has requested a round trip, the system shall display two tables one for the onward trip and one for the return trip. There will be a check box in front of each line in the table representing a flight with available seats.The user is now asked to check one of the boxes reflecting a choice of a flight number and time. In case of a round trip, the user is asked to check one box each in the two tables.The system shall now display the price of the ticket for the trip. This will be the sum of the prices for all the members of the travel party being represented by the user.The system shall also list any rules regarding the cancellation of tickets what percentage of the price will be give backed within what date ranges. This will be displayed as a table.Making Reservations/Blocking/ hitchAfter having taken the user through the, Checking Availability, The system will now ask the user if he wishes to block/buy the ticket. If yes, andif the user has been a guest, he will have to first register and become a registered user and then log onto the system.If the user is already a registered user, and if he has logged on already, he can block/buy the ticket, but if he has been acting as a guest, he will have to log on.Having ensured that the user is logged on validly according the system compares the departure date with the system date. If the departure date falls within 2 weeks of the system date, the system informs the user that he has no option to block the ticket and asks him if he would li ke to buy it.If the difference between the departure date and system date is more than 2 weeks, the system asks the user if he would like to block or buy the ticket. The system informs the user that he can block the ticket at no cost now. It also informs him that if he chooses to block the ticket, he should make a final purpose before 2 weeks of the departure date. The system shall mail an email to the user, 3 weeks before the departure date as a reminder, in case he decides to block the ticket now.Having taken the input from the user, the system shall now proceed to update the reservation database DB-reservation. It will decrement the number of available seats on the particular flight for the particular class by the number of travelers being represented by the user.In case of a city block, the system makes a note of it in the database to be used if the user doesnt turn up before 2 weeks of the departure date. It generates a blocking number and displays it for the user to note d own.In case the user buys the ticket, the system accesses his profile and charges the price of the ticket to his credit card number. It simultaneously generates a haveation number and displays it to the user for him to note down. The ticket has been reserved.It adds the mileage of the trip (accounting for the number of travelers) to the skymiles in his profile.Confirm TicketA user who has earlier stop a ticket after going through the preceding steps required to either confirm the ticket before two weeks of the departure date or the ticket stands cancelled.To let the user confirm a ticket, the system shall first log him on and ask for his blocking number. Then it accesses DB-reservation and removes the check mark, which so far represented a blocked seat. The seat is now substantiate and reserved for the user.The system accesses DB-user and charges the price of the ticket to the credit card number of the user. It simultaneously generates a confirmation number and displays it for t he user to note down. The ticket has been reserved.It adds the mileage of the trip (accounting for the number of travelers) to the skymiles in his profile.Reschedule TicketThe system shall present the user with an option to re-schedule his travel partys trip. In order to do this, the system first logs on the user and requests his confirmation number. It will not exit a user to reschedule a blocked ticket but only a confirmed ticket. Using this, it queries DB-reservation and presents the details of the trip to the user, including but not limited to origin city, destination city, date of departure and date of arrival (in case the trip is a round trip).The system shall now ask the user to select new dates from the calendar-menu.In case, there are no available tickets for the dates entered, it displays a suitable message ratting him that rescheduling to that date is not possible.In case there are tickets available, the system asks the user to select the flight number for the trip (anot her for the return trip if the trip is a round trip) and bribe to update the database.The system accesses DB-reservation and decrements the number of available seats on the flight(s) by the number of members in the users travel party. It then increments the entry for the previous flight by the same number to reflect an increase in the available seats on it as a result of the rescheduling.The system now checks if there is any difference in the prices of the tickets. If so, it accesses DB-user and charges or credits the credit card as the case may be. The system generates a new confirmation number and displays it to the user.CancellationThe system shall also give the user an option to cancel a confirmed ticket or a blocked ticket.The latter case is simpler and will be dealt with first the system shall first log on the user and request the blocking number. Then it accesses DB-reservation and updates it by incrementing the number of available seats by the number of people in the users travel party.In the former case, i.e., for a confirmed ticket, it asks for the confirmation number and accesses DB-reservation and presents the details of the trip.It then lists the applicable rules for cancellation of tickets and depending on the system date and the departure date, it displays the % of the amount that would be refunded if the user cancels the ticket.After the user cancels the ticket, the system generates a cancellation number and displays it for the user to note down. It accesses DB-reservation and updates it by incrementing the number of available seats on that flight by the number of travelers in the users party. It accesses DB-user and credits the refund amount to his credit card number. The system then deducts the mileage of the trip (taking into account the number of travelers in his party) from the sky miles in his profile.Update ProfileThe system shall enable the user to update his profile at any time. Changes can be make in fields including but not limited to address, phone number and preferred credit card number.View Ticket StatusThe system shall allow a user to view all information about his trip. After logging him on, it asks for his blocking number or his confirmation number. It accesses DB-reservation and retrieves the details of the trip and presents them to the user in a convenient format, including any last minute changes to the flight timings etc. Such changes will be highlighted.Query Flight DetailsThe system shall allow any user (registered or non registered) to access the details about the arrival and departure times of a flight by requesting the user to input the flight number and date. The system accesses DB-schedule and presents the time of arrival and departure.Telephone accessThe system shall be accessible through a touch-tone telephone. The telephonic interface shall, at the least, provide the customer with the facility to check availability of tickets and call into question flight details. The system shall walk th e customer exactly through steps 3.3 and 3.9 respectively but through a telephonic interface.Non-functional RequirementsPerformance result time of the Airline Reservation System should be less than 2 second most of the time. Response time refers to the hold time while the system accesses, queries and retrieves the information from the databases (DB-user, DB-schedule etc) (A local copy of flight schedule database is kept up(p) as DB-schedule to reduce this access time)ARS shall be able to handle at least 1000 transactions/inquiries per second.ARS shall show no visible fall in response time as the number of users or flight schedule data increasesReliabilityARS shall be available 24 hours a day, 7 days a weekARS shall always provide real time information about flight availability information.ARS shall be fertile enough to have a high degree of fault tolerance. For example, if the user enters a negative number of passengers or a value too large, the system should not crash and shall identify the invalid input and build a suitable error message.ARS shall be able to recover from ironware failures, power failures and other natural catastrophes and rollback the databases to their most recent valid state.UsabilityARS shall provide a easy-to-use graphical interface similar to other existing reservation system so that the users do not have to follow a new style of interaction.The web interface should be intuitive and easily navigable Users should be able to understand the menu and options provided by ARS.Any notification or error messages generated by ARS shall be clear, succinct, cultured and free of jargon.IntegrityOnly system administer has the right to change system parameters, such as pricingpolicy etc. The system should be secure and must use encryption to protect thedatabases.Users need to be authenticated before having access to any personal data.InteroperabilityARS shall minify the effort required to couple it to another system, such as flight schedule database system.Future RequirementsSupport for waiting list functionalityARS shall be made more flexible in ticket reservation handling, and shall accept waiting list for reservation.The waiting list handling capability of ARS shall be made more advanced, by enabling it to send requests to the Flight Scheduler to schedule particular(a) flights, depending on the demand in a particular corridor, and providing the wait listed passengers with a new flight.The telephonic interface of the ARS shall be improved to support more functionality likeallowing the customers to cancel a ticket etc., by incorporating security measures.ARS shall be made more dynamic and helpful to the users by enabling it to send instantmessages to the passengers, of a cancelled or rescheduled flight, through email, phone,Fax etc., informing them about the change, and providing them with other feasiblealternatives.Information about the kind of meals served in a flight and the type ofentertainment offered on a flig ht should be incorporated into the system.Provide serviceintegration with auto rental agencies and hotel chains.Interface for the travel agents shall be provided in the future versions with additional features like informing them of any availability of seats on a flight which was earlier booked to capacity.Choices like aisle or window seats shall be provided to the users.The ARS shall be able to handle the situation where flight services are available to multiple airports in a single city.