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What is referential integrity in relational model

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Reference no: EM132585996

1- What is referential integrity in a relational model?

2- Create an ERD for the following relation (see image below)?

Hint: The entities are PERSON, PERSONCREDITCARD, and PERSONPHONE.

The attributes for the above entities are the column headings below respectively.

 

Reference no: EM132585996

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