English: This ERIL diagram shows three entities: Account, Card and Transaction. There are three one-to-many relationships. An Account can have several Cards, composition (ownership). An Account can have several Transactions, composition (ownership). One Card can be linked to several Transactions, aggregation (no ownership).
{{subst:Upload marker added by en.wp UW}} {{Information |Description = {{en|This ERIL diagram shows three entities: Account, Card and Transaction. There are three one-to-many relationships. An Account can have several Cards, composition (ownership). An...