Hello,
I am new to access, and i have no idea how to do this!
I have one big main table with all the peoples names and id and i want to create another smaller table such that when i enter the id the names should automatically be filled up.
I made a Table with one record per person which is entered initially and contains a sub-table which is a list of the drugs they are taking. As people are notoriously bad at spelling drugs they select them from an alphabetacised drop down list held in another table. The idea being that they check the spelling before entering them on the main table for any new drugs. The subjects each come back and have a number of measurements taken on a number of visits.
So the main table and the drugs table have a one to many relationship and the main table and the visits. In both cases the tables are linked by the same unique identifier which is compulsory and unique in the master table. The data is input using a master form and sub-forms.
I havent done any of the input but when I looked at the two sub-tables they each have a number of records which are blank in the identifier feild.
How has this happened? How do I stop it happening and is there any way of finding out which record these visit data and drugs should belong to?