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IT GCSE Project 1: Validation

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Introduction

Validation In Order to make my system much more successful. I shall implement validation checks on my dental practise database system. Compulsory Fields The fields with this check makes sure that a patient or member of staff has filled in the necessary information, if the field is not filled in they will receive an error message telling them to input the important information. But this type of validation check does not check for mistake made by the staff/patient therefore this will result in contacting them to give the correct information. I have evidence that this checks for compulsory information. This Evidence shows you that I have not filled in the last name resulting in an error message saying "Field 'LastName' must be filled in". I have applied this check too: LastName, FirstName, Emergency No, Post Code, and House No. I thought it was appropriate to apply this check into these fields because these are the most vital parts of the information needed. This will help to prevent certain errors like making them unable to input anymore information until they fill in the field and will also give us the minimum information to allow us to contact either the staff of patient in order to get the correct information. ...read more.

Middle

Check Fields This checks each field for a unique number for example: if you want it so a specific field can only use from numbers 1-100 you would use this check to make this possible. Here is evidence to show that this check works. I applied this check to the following fields: "Patient ID" and set it from 1 to 99. I also applied this check to "Dentist ID" and "Appointment No." For "Dentist ID" I set it from 100 to 200, and for "Appointment No." I set it from 1000 to 9999. the reason I thought it was appropriate to add this check to theses fields is because for "Appointment No." I put a big range because there won't be a limit of how many appointments the dental practice can have but there will always be a limit of how many dentists and how many patients there will be. This check will help to prevent errors. For example, if the person filling the data in was for a patient record and they added a wrong value in that was used in another table such as Dentist or Appointment. ...read more.

Conclusion

to get all of the details from that record and it will be added into the patient link value list automatically same with the dentist link field. The evidence for the dentist and patient link is here. These are the fields from the appointment table when you insert the patient link number from the value list the other details are filled in automatically. This is the part of the record from the patient table this has to be filled out manually but the data is used in other parts to make the database easier to use. The errors this would help to prevent are that it would make it much easier for the person to pick the Name Title just in-case there is a spelling error. It would also help the person making the appointment because they can gather the patient/dentist information into the appointment record without inputting all the information again. The evidence is given in images above. This is not fool proof there is still some errors that can occur because you do not have to use the value list it is just there to help you can still make spelling errors in the field. ?? ?? ?? ?? ...read more.

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