How to manage data file

My intention is to add , update and delete records to the existing data file. I made this project on the basis of information available here.But my attempts stand in vain.Could any one help me in this regard.? The project file and screen shots are put here for modification and response reply.
DatabaseUpdateMultipleFields.flp (21.4 KB)
Records -adding
records - adding 2
If any one has a project to add, edit, and delete records of a data file may please be upload here in reply.Thanks in advance.



Vladimir_PV Sir,
Thank you for your quick response. You showed 3 ways to change data values .It is very great. I tried 3 , only 2nd and 3rd are well working,but the first one is not changing Data value as you shown. I am unable to spot out the problem in my project. I am uploading my project not to take much of your valuable time. Plz, correct it and reupload it.


DatabaseUpdateMultipleFieldsbyStringVariable.flp (21.8 KB)

2024-12-02_20-26-49
2024-12-02_20-30-16
DatabaseUpdateMultipleFieldsbyStringVariable_Debug.flp (21.8 KB)

Thank you for your cooperation .


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