Hi
I am trying to build a database for my project wich has an Inventory. The inventory database has categories. That I managed to do by using a seperate entity to store category values. But what I dont understand is how to have a count of number of specific items in a single category.
For example there is a category named "Saws" and items to this category will be added like "wood saw" "chain saw" etc. But what I need is to count the number of "wood saws" added. I can create a form input and a field in the data table named "Number of Items", but how do i make that work?? Like I mean if we added 10 wood saws via the form, the number of items will be 10.. And If i again added 5 wood saws, the number of items should be incresed to (10+5) =15..
Please help