Monday, April 8, 2019
Feasibility Study Essay Example for Free
Feasibility Study EssayTechnical FeasibilityIt is technically possible to design a script remarking cheek because computers can be used to sort, search and up appointee info input victimization a database management constitution such as Microsoft Access. The current ironw atomic number 18 of the United Kingdom Awarding Body is sufficient, as all they result need to ravel the system of rules is a computer (preferably with 64Mb RAM, 10Gb hard disk drive, 3.5/1.4Mb floppy disk drive and a 8Mb or high graphics card), a standard keyboard and mouse, a printer and a visual display unit to run the system effectively and efficiently. Economic FeasibilityIt is economically feasible to design and use this script remarking system because fewer people would need to be employed to do the work of remarking a script and producing the themes manually and more work can be done in a shorter go out span, therefore excessively saving on overheads such as light and heating as well as empl oyee wages, heavy FeasibilityIt is legally feasible to use this script remarking system because all the data used pull up stakes be used for the specific purpose of remarking the candidates script and nothing else. The data depart not be kept longer than necessary and at the candidates request the data may be destroyed subsequently a certain period of while. The data is also secure as both(prenominal) administrators and clerical faculty need to take hold their group name and passwords to log into the system successfully, but also the system database password, without both of these, the data cannot be accessed.Operational feasiblenessCurrent work practices and procedures will benefit from the implementation of this unfermented script remarking system as it allows more work to be done in a shorter time span, therefore providing a quicker and more efficient service to the candidates whose scripts argon being remarked. The social factors will be greatly improved by the organisat ional change of using this remark system, both clerical and administration staff can keep more work done in a smaller time period allowing more leisure time to the workers for the same amount of pay in wages.Schedule feasibilityThe designing, testing and documentation of the script remarking system can be completed before the deadline, there are 6 weeks to complete this.Data Flow DiagramWhat are the user ineluctably?The user inevitably an easy-to-learn and manageable interface to be able to monitor the UKABs (United Kingdom Awarding Body) post-examination remarks. In doing so, the user needs to be able to input data (candidate information, the original mark, the date the script was received, the remark mark and the date the script was marked) and get the desired outputs in queried reports.The user needs to know that all data entered will be secure and not tampered with or altered by hackers, so security measures have been taken.What Entities are to be considered?The entities to be considered for this system are Script quest and Grade Criteria.The attributes to be considered for the Script Request entity are* Candidate Number* Candidate Name (Forename Surname)* Centre Number* motif Reference autograph* Original Mark* Re-mark Mark (changed or unchanged)* Whether the centre requested the return of the scriptWith the additional attributes of* The date the script was received* The date the script was remarkedEntity Relationship DiagramThe attributes to be considered for the Grade Boundaries entity are* Subject Reference Code* Grade Boundaries for grades A-E and UWhat procedures will be required to achieve the desired outputs?clerical staff using the remark system will need to input the data required via forms using a keyboard and (or) a mouse. This will automatically update the queries in place, which will update the reports. The reports will indeed be outputted using a printer.EvaluationDuring this systems design, there were many problems encountered. Whe n designing the entities, it was not known that many of the attribute lengths needed to be shortened to save memory, main(a) keys to ensure each record of data is unique or validation rules had to be set to decrease user errors. The attribute lengths, validation rules and primary keys were set during the design stage (See Validation).An entity had to be linked to an opposite to allow data from one entity to calculate several times in another entity and was used in querying. Reading into how linking entities was completed and the tables were linked successfully.Forms were intentional to aid user input and stop clerks altering the design and (or) contents of each entity. At first, some(prenominal) buttons worked incorrectly, but were fixed once further reading into using and creating buttons was finished (See Design).Queries were designed to support the macrocosm of reports. These queries search the entities for predefined criterion which is requested by the user. Some criterion needed much deliberation, such as the outstanding remarks query/report. Two extra attributes had to be considered and implemented, these were script_received_date and script_remark_date. Then the query for remarks which took longer than 3 weeks could be completed, with the search criterion as followsScript_remark_date-Script_received_date21 (See Design).Reports needed to be created, as they were the desired output to be displace off to the centres after scripts were remarked. Reports were created using the queries.A user interface was also designed to make the remarking system user friendly. At first, much like the forms, some buttons did not work correctly and there were other aesthetical issues also, such as a colour scheme for the interface. Buttons were fixed and a simple heretofore attractive colour scheme was chosen for the interface.Also there was difficulty in producing a satisfactory formula to calculate the original grades from the original marks and the re-mark mark an d the re-mark grades. After consultation with a tutor, a solution was found and the following formula was devisedIIF(Expression), True, False.Afterwards, the razing formula was designed and is as followsGradesIIf(Original_Mark=A,A,IIf(Original_Mark=B,B,IIf(Original_Mark=C,C,IIf(Original_Mark=D,D,IIf(Original_Mark=E,E,U))))).A re-mark grading formula was also considered and implemented and is as followsRemark_Grade IIf(Re-mark_Mark=A,A,IIf(Re-mark_Mark=B,B,IIf(Re-mark_Mark=C,C,IIf(Re-mark_Mark=D,D,IIf(Re-mark_Mark=E,E,U))))).EffectivenessThe system re-grades papers and produces reports on the papers that are re-graded when candidate information is inputted via the candidate information input form.UsabilityThe system is easy for the users to use the interface, it has buttons which open files and forms and have a simplistic design and are attractive to use.MaintainabilityThe system will be easy to remark because of its simplicity and will be easy to manipulate to accommodate new requ ests for different types of information without ever-changing how the system runs excessively.MaintenancePerfective maintenanceFor the perfective maintenance, the admin staff can change the queries that create the reports to get the desired results. I.e. changing a query so that the Scripts requested by a selected centre report shows a different centre.Adaptive maintenanceFor the adaptive maintenance, staff could use new hardware to financial aid reduce clerical errors. Staff could use OCR and MCR scanners to read the scripts information instead of inputting them manually and therefore reduction human errors.