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set - A collection of well defined and distinct objects. eg:emp={001,002,003,004....}

Relation - table(employee)

tuple -row(which employee)

attribute-column(details about that employee)

set theory says what all can be done with relation(table) with various operators

union ,intersection,=,!=,<> etc

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12y ago
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Q: What is the contribution of set theory in rdbms?
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