Computing project Essay Example for Free

Computing project EssayThe musical arrangement exit require a expenditurer bring up and a war cry to view or edit both matter solitary(prenominal) angiotensin-converting enzyme person is permitted to use the brass, no-one else requires access All cross- files go forth also be password protected. Database The teacher give be able to add or delete any records as needed It give herstwhile(a) wholly necessary expatiate Specific Objectives The infobase will be able to create reports to luff what stage the scholar is at The informationbase will calculate how legion(predicate) lessons a bookman has had and how much they engender paid with plus if in that respect are any dandy balances re maining. My form is knowing to help the teacher, the teacher has many problems with the current organization, and many magazines it has cost him baseless moments. The current system is very old and has a lot of potential problems and I wish to draw in a system that eradicat es these obvious problems. My system for a start will store the entire student inside information carefully and properly in line with in all info protection acts. The main subject is that these details should not bunk mixed-up and the teacher has access to this all the magazine so that he lot contact the student at any period. The details should also be available so that it can be updated any time it needs to be.By having all these details stored onto the system it is kept proficiently and in one tell rather than having musical composition forms lying rough renderting anomic and muddled up, these forms will only be accessed only in one place so if the instructor needs these back in the social function or at to work from at plaza therefore it is not possible to induce water seven-fold copies as it will not all be up to date. For example if a student changes the home phone number thus the instructor will flip to update both sheet of paper he has with the stude nts phone number if he does not indeed it will be inconsistent and this can cause problems.The main reason for my proposal of this system is to en reliable that the instructor does not continue reprise date and not booking students at all. Currently at the end of a lesson the student asks for a booking and the instructor will look in his daybook and book appropriately, many measure what happens is the instructor looks at the wrong date, for example if the student asks for April 21st 2008 so the instructor may accidentally wanton may 21st 2008 and tell the student he is free. alone in reality on that sidereal day an on that time he is busy.This is one of the things the instructor is complaining about and also another thing that has been drawn to my attention is that he misreads the time, so he tells the student that he is booked at 1300 tomorrow but he is actually free he has a lesson at 300 not 1300 so this is one way the instructor is loosing out on money. I wish to assu me this issue and avoid these mistakes happening. GCE A2 Computing CPT 6 Ram Bhojani EXISTING constitution Instructor Bookings Ram Bhojani 13HAN PROPOSED SYSTEM DESIGN OVERALL SYSTEM Input playes Student Name Calculate the number of lessons so remote Student fare Calculate the total amount spent.Student Address Add a student Lesson Code burn a student Price Per Lesson Delete a student meet and time of following lesson Search a Student Day Booked Search Availabilities Time Booked Edit a booking File Outputs Student Details Student details Availability Details Number of lessons each student has had add spent Balances FORMS General Name Purpose Main Menu This allows the instructor to access the student details and availability details. Student Details This allows the instructor to view all details about a student. It also allows the instructor to print a report on the student shape out Availability Details.This allows the instructor to forecast what dates and times are avai lable in the next two weeks and make a booking. USER INTERFACE DESIGN MAIN MENU STUDENT DETAILS MENU availableness DETAILS DATABASE DESIGN INCLUDING ER MODEL STUDENT (StudentName, StudentNumber, StudentAddress, LessonCode, PricePerLesson, DateAndTimeOf besideLesson) Availability (AvailableSlots, NextLessonBooked) RECORD STRUCTURE Instructor national name Data type Size format Description AvailableSlots Date/time, Date time Shows what dates and times are available NextLessonBooked Date/time, Date time Name of student and the day, date and time of their next lesson.Student sphere name Data type Size/format Description Student name Text, 20 The first name and last name of the student. Student number Number, 8 A quaint number given to each student for lento reference. Student yell Text, 50 Full address of student, including postal address. Lesson code Number 5 A code that determines what sort of lesson they take, they can have an hour lesson, one and half-hour or pass plus. Price pe r lesson Number, Decimal 5,2 How much the student pays for each lesson Date and time of next lesson Date time Date time The next lesson student has booked. VALIDATION.I will use validation on some of the domain of a functions on the tables so there is less come across of wrong data being inputted. There are only some fields that can have validation but by ensuring they have a working validation it will mean that the system will not be wrong. Things that I can validate are numbers or particularised number of characters. This is to make sure that the data entered conforms to a certain standard. The user cannot get word the validation rules, so when they make a mistake they find out as an error meaning appears. VALIDATION Field Name Validation image Validation Rule Error message Student Number Type Check.8 digits The student number mustiness be 8 digits Lesson Code Type specify 5 Digits The lesson code must be 5 digits. STORAGE AND MEDIA FORMAT For my system I need to grapple how astronomical each file will be so I have calculated the surface of each field, and multiplied that but the amount of fields ii may get, to get an estimate of how large the file could get. Storage and media format Field name Number of records Size of record/ bytes Total coat of records/bytes Student name 30 32 960 Student number 30 8 240 Student address. 30 65 1950 Lesson code 30 5 150 Price per lesson 30 8 240 Date and time of next lesson 30 16 480.Available lessons 31 20 620 Next lessons booked 6 134 804 Total 5444b 5. 4kb I have calculated that the approximate maximum size that I will need for the data to be stored will be around 6kb, which is small enough to fit on almost any data storage type. The most suitable storage cunning for this will be the sonorous criminal record drive on the laptop computer to be used. This means that the system will not be confounded easily as it is not a portable storage device but on a actual laptop, which would be looked after carefully . There is a large amount of space on the hard disk nitty-gritty that there will be available space for expansion if necessary.Also the laptop can be connected to a computer in the office via a USB cable meaning that the data could be backed up and if needed archived. IDENTIFICATION OF SUITABLE ALGORITHMS FOR DATA TRANSFER Process to calculate Total number of lessons so far = (Student Lessons)*(Total) Process to calculate Total spent so far =(Total lessons)*(Price Per lesson) Produce report of students ready for tribulation Search through student details with criteria field Ready students to find matching records. If there are no matching records output an error message to the user. PLANNED VALID OUTPU.T.For my system outputs I have decided to create a report for students to see their progress. This will need to be created in Access. DESCRIPTION OF MEASURES PLANNED FOR credentials AND INTEGRITY OF DATA. The data must be kept secure and correct as this informations is very confide ntial, if details of the student were to get incapacitated or misplaced then this would be in breach of the data protection act. To keep the data secure I am going to make sure that the user backs up the data at the end of every working week and keeps this disc either safely at home or in the office.There will also be a back up of the main system so if it happens to crash or is damaged then it can be set backd. If the system does crash then the files will have to be manually transferred back into the system from the backup. DESCRIPTION OF MEASURES PLANNED FOR SYSTEM SECURITY The system will not be secured with passwords however the computer will have a password this will be set to expire every 28 days to check out that the data is safe even if someone gains the password, the user will generally have to be careful and keep the laptop besides him at all times or lock it in a glove compartment.When the instructor goes home he can either take it with him and store it at home carefull y or leave it at the office in a safe place. As my system is only designed for one person the password on the system should be a sufficient security measure. study STRATEGY The system must be thoroughly tested to make sure that no errors lapse the system is up and running play. This is logical because if errors occur when the user starts to use the system, it can cost time to get it fixed. Hopefully if my testing strategy is good enough, it will not have any errors when it goes live.I am going to use bottom up testing, to test the system. This involves testing each individual module victimisation prepared test data, which includes normal data, extreme data, upper and lower limits and individual data after this is do I will test the program to see if every route through the program is tested, every statement is executed, accuracy of the processing and that the program fits the original specification. This will make sure that the system is running correctly as this is canonicall y using the whole system. I am also going to test the system in a beta testing method, although this will be a small scale.I am going to give the system to the user for a week just to make sure that everything works correctly. IMPLEMENTATION Login Screen Main Menu This is the main menu of my programme from here there are three options availability details and student details. Finally you can exit. demonstrateing Test ID Test Data Test/Type Reason for test Expected Results Actual Results Data Entry 1.My system does conisit of tables and menus, both the student details and availability detail screens are very simple-minded, it just displays details about these two entities.The booking screen is more complex because it needs to be live, so when the instructor makes a booking it needs to update on the next lesson booked screen and the availability screen. PROCEDURE AND shifting LIST/ DESCRIPTIONS FOR PROGRAMS OR LIST OF PACKAGE ITEMS DEVELOPED Type of item Item Name Descriptions rem and Student Details Holds all the details of the students that the instructor teaches, this includes first name, last name, address, phone number and the details of their next lesson that has been booked.Holds the details of all the available time slots in the coming fortnight, this allows the instructor only to see what is available, he can liaise with the student and once a slot is agreed a booking can be made. Form Make A Booking This form allows the user to make a booking for a lesson, he will need to enter the student number, and then first of all select a time and then the date. Once all these are selected the appointment is made. Form Next lesson Booked Has a list of students and the date and time of their next lesson, so the instructor can check on this if he receives a query from the student.CREATION AND CUSTOMISATION OF THE DATABASE TABLES I created all my tables in Microsoft access I then linked it up to visual basics, The table below is the Student Details table. It cons ists of mostly textual matter and one field of number, the reason that the telephone number is a text field rather than a number is because telephone numbers usually start with a 0 and if I put the data type as numbers then it will not let me add a 0 at the front. USER MANUAL BRIEF INTRODUCTION The instructor database is a simple system to hairgrip bookings given to the instructor.The system allows the instructor to control appointments already made and allows him to make new appointments. It allows him to keep electronic records of all students, past and present. The students all have unique student numbers that the instructor can use to search for them. It stores details about students names, addresses, telephone numbers and the lessons they have booked. There is a very easy to use form that allows the instructor to make a booking.Microsoft Access 2007 or later. To install the system one must either move the file onto the hard disc of the computer. This can be done by selecting the file Instructor Database System and copying and pasting it into an empty folder on the hard disc, this maybe the outperform idea as there is a possibility a removable storage device could get lost or corrupt. This system could be also run from a removable storage device by opening the file and run it straight away. To back the system up the system the database file can be copied onto a USB pen or CD-R.When the system is going to be backed up, the file should be copied onto the USB pen, when this done a message box may appear asking if you want to replace the existing file just select yes or yes to all. This would mean that the backup would be separated from the main system, meaning less chance of losing both the original and the backup. USING THE SYSTEM Here is a simple short set of instructions to use the system. When the instructor opens up they will be asked to log on, The username at the moment is Ian and the password is Burleigh. Once they enter all these details correctly it allows them to use the system.Once the instructor logs on, he will come to the main menu of the system, I am going to show him to basic things in this tutorial, how to find the phone number of a student and then how to make a booking. infra is the main menu, to get to the student phone number he has to select the student details button, then the screen will have three buttons saying details, he can select any of these three, they all do the same job. Once that is selected at the screen below will appear, there are no details at the moment, but once show details button is pressed all the details will appear.The instructor now needs to press the back button until he arrives back at the main menu, and then select availability details. Then select make a booking. Once the make a booing screen appears first he has to select the date that he wants, then the time and lastly the student number. Once that is done press save and then it is saved. Appraisal Comparision of project performa nce against objectives. To canvas the objectives and the performance , I will put the original objectives down and compare against each one. General Objectives Security.The database will be able to create reports to show what stage the student is at The database will calculate how many lessons a student has had and how much they have paid with plus if there are any outstanding balances remaining.My system is designed to help the instructor, the instructor has many problems with the current system, and many times it has cost him jobless hours. The current system is very old and has a lot of potential problems and I wish to make a system that eradicates these obvious problems. My system for a start will store the entire student details carefully and properly in line with all data protection acts. The main thing is that these details should not get lost and the instructor has access to this all the time so that he can contact the student at any time. The details should also be availab le so that it can be updated any time it needs to be.By having all these details stored onto the system it is kept safely and in one place rather than having paper forms lying about getting lost and muddled up, these forms will only be accessed only in one place so if the instructor needs these back in the office or at to work from at home then it is not possible to have multiple copies as it will not all be up to date. For example if a student changes the home phone number then the instructor will have to update every sheet of paper he has with the students phone number if he does not then it will be inconsistent and this can cause problems.The main reason for my proposal of this system is to ensure that the instructor does not continue double booking and not booking students at all. Currently at the end of a lesson the student asks for a booking and the instructor will look in his diary and book appropriately, many times what happens is the instructor looks at the wrong date, for example if the student asks for April 21st 2008 then the instructor may accidentally open may 21st 2008 and tell the student he is free. But in reality on that day an on that time he is busy.