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1.What is referential Integrity?
2.What is Foreign Key?
3.What is Transfer Control?
4.What is Free format?
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Answer Posted / manoj
1. Referential integrity maintains the integrity of a
database using key fields. Referential integrity is defined
as "the state of a database in which all values of all
foreign keys are valid"
2.A foreign key is a column or a set of columns in a table
whose values must match at least one primary key or unique
key value of a row in its parent table.
3.
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