In the relationships window, what does the appearance of symbols, such as 1 and the infinity symbol, at the endpoints of a relationship line mean?

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Question:In the relationships window, what does the appearance of symbols, such as 1 and the infinity symbol, at the endpoints of a relationship line mean?

1.Referential integrity is enforced

2.Referential integrity isn’t enforced

3.An inner join is set

4.An outer join is set

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  1. In the relationships window, what does the appearance of symbols, such as 1 and the infinity symbol, at the endpoints of a relationship line mean?
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