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OCR: A simple relational example in db File: CD Songs CD # 1:m CD # Category Song # Disc title Song title Group/artist Distributor Length Price Comments: = Key field. The field(s) within this border make a record unique. 1:m = A one-to-many relation. i.e. for each CD there can be many songs This relation is implemented using three ARexx scripts in this drawer: CD-Songs.db, Songs-CD.db and unique.db