Line by Line Relationship

I want to relate the same field in two databases line by line
Data.pdb
Display.pdb
Each has a DATE field
Each has an ITEM field
Using RELATIONSHIP:
I enter that amount into DATA:ITEM and ALL the lines of ITEMs in DISPLAY become the latest ITEM
I want the ITEM on each DATE in the DIPLAY.pdb to be the same according to Date as the DISPLAY.pdb
Thank you
Data.pdb
Display.pdb
Each has a DATE field
Each has an ITEM field
Using RELATIONSHIP:
I enter that amount into DATA:ITEM and ALL the lines of ITEMs in DISPLAY become the latest ITEM
I want the ITEM on each DATE in the DIPLAY.pdb to be the same according to Date as the DISPLAY.pdb
Thank you