one to many relationship sql what to do?

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i have table with one to many relationships

lodge_id int auto increament
name nvarchar(50)
active bit

another table

car_id int
lodge_id int fk to first table
car_use active

like that i have 17 tables in this case when i edit my form and the user add one row to car table i am currently doing this way

i am deleting all the rows from car table and then inserting once again because of uncertainty of user dont know which rows updated by user so is there any other ways?

note that user can add rows at edit time ...................

Posted 8-Jul-13 1:41am

Dholakiya Ankit

Updated 8-Jul-13 1:53am

StM0n

v3

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Comments

Mukesh Ghosh 8-Jul-13 7:54am

Not clear to me. Can you tell what exactly you want to do?

Basmeh Awad 8-Jul-13 7:55am

which control you are using on your form??
DatagridView??

Dholakiya Ankit 8-Jul-13 7:57am

yes using gridview control

Dholakiya Ankit 8-Jul-13 7:56am

yes i am using gridview control

StM0n 8-Jul-13 7:59am

I'm not quite sure, if I get a grip on your question... but it seems, that your data model is a little bit mixed up if you have to delete the whole content of a table.

Dholakiya Ankit 8-Jul-13 8:02am

explained in details-------------

one table taxlodgment and another car etc
in car table multiple rows are there for one row of tax lodgment

so when user edit cars he can add / edit / update and currently i am deleting all rows from table cars and then inserting again so is there any other ways?

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Basmeh Awad · Answer 1 · 2013-07-08T02:19:00

Solution 1

you don't need to delete and insert every time..in the begining when you are displaying data from table in your gridview set the first column of your datagridview to Visible=False
and fill that column with car_id
and at the time of saving data check

VB

If DataGridView1.Item(0, YourRowIndex).Value = "" Then
   'Insert
Else
   'Update
   'Fire your update statement here
End If

Posted 8-Jul-13 2:19am

Basmeh Awad

Comments

Dholakiya Ankit 8-Jul-13 8:21am

no user can update already inserted data

Basmeh Awad 8-Jul-13 8:23am

ya so whats the problem..the new data will get insert and the already inserted data will got updated

Dholakiya Ankit 8-Jul-13 8:28am

ok so this will be a best way to do that right?
so i am taking it as solution

Basmeh Awad 8-Jul-13 8:30am

your choice:-)

Dholakiya Ankit 8-Jul-13 8:34am

ok (:)