Question: 300 words for each. no copy and paste What is referential integrity and how is it implemented in an RDBMS? What are the factors in

300 words for each. no copy and paste

What is referential integrity and how is it implemented in an RDBMS?

What are the factors in determining the type of object persistence format that should be adopted for a system? Why are these factors so important?

What is the purpose of normalization?

Describe several techniques that can improve performance of a database

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