Relational Model Introduction - E-Courses
Relational Model Introduction - E-Courses
Relational Model Introduction - E-Courses
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<strong>Relational</strong> representation of weak entity sets<br />
Let E' be a weak entity owned by a strong entity E<br />
E' is converted to a table, say R'<br />
Attributes of R' will be<br />
Attributes of the weak entity set E' and<br />
Primary key attributes of the identifying strong entity E<br />
• These attributes will also be a foreign key in R' referring<br />
to the table corresponding to E<br />
Multi-valued attributes are dealt separately as described later<br />
Prof P Sreenivasa Kumar<br />
Department of CS&E, IITM<br />
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