A relationship that connects two entity types is called a unary relationship.
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Q8: By way of comparison to natural language,relationships
Q9: Unary relationships are sometimes called reflexive relationships
Q10: In Crow's Foot notation,the maximum cardinality symbol
Q11: In an ERD diagram,primary and foreign keys
Q12: Identification dependency is a type of existence
Q14: In certain cases,adding an additional attribute to
Q15: In a multiple level generalization hierarchy,the attributes
Q16: In Crow's Foot and most other notations,entity
Q17: Named relationships are found in both relational
Q18: In an ERD that conforms to the
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