Double booking preventation

jeudi 5 mars 2015

Hello :)



I am stressing out over trying to prevent doublebookings on my database which ive spent 2 days trying to figure out :(



so what ive tried to do is : use queries that will take one away from the other so that when i go onto my form which creates appointments it will do this:



Select Dentist ( via userID) and select the date after this the time field which is a combo box will only display the times that are available and will remove the times take.



Its been a really hard task for me and i am left with lots of queries due to trial and error but ive decided to turn for help as it is taking far too long that it should be :(



i have attached my queries to show what i have attempted. i would be greatful for any help :)





thank you




Attached Images





















File Type: png query1.png (22.2 KB)
File Type: png query2.png (12.4 KB)
File Type: png query3.png (17.1 KB)
File Type: png query4.png (12.2 KB)
File Type: png query5.png (15.3 KB)



Double booking preventation

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