Hello,
i am new to access 2010 and directly encountered a huge problem!
Background: i need to change the primary key in a table ("stations", Primary key is "station number"), because future entries will result in double entries for this primary key.
I have another table ("species&stations") which has records of Species for each "station number".
So I created a new Primary key for the "stations" table, now called "species id", being a bit better in defining a unique station (as it contains the year and the species number, i.e. "451_2010")
Now the table "species&stations" references/(is in relationship with) the old primary key, identifying a station number for each record.
How do I get it to recognise the new primary key from the "stations" table, and keeping the records (over 1000...) with all there info.
Approach so far: I tried to create a new field in "species&stations", which should look up the new primary key from "stations" and then autofill the field. i did not manage this though
I attached a screenshot to make the relationships more clear!
Can anybody help???? Nobody at my institute seems to use Access!