Question

In access 2010:

I have the table “pharmacy” and I have a field called “ph_quantity”.
I also have the table “warehouse” and I have a field called “wh_quantity”.
In “warehouse” I also have a field called “available_stock”.

Whenever I will change “ph_quantity” or “wh_quantity”, I want to automatically update the value of “available_stock”.

Any help please?

Answer 1

There are two new features in MS Access 2010 that should be of use to you.

In Access 2010, you can create table fields that calculate values. The
calculations can include values from fields in the same table as well
as built-in Access functions.

— http://office.microsoft.com/en-us/access-help/add-a-calculated-field-to-a-table-HA101820564.aspx

Attaching Logic to Data Using Data Macros in Access 2010 Applications