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Unformatted text preview: in another relation. 3. How would you identify Primary Keys in a relation/table? A candidate key selected to uniquely identify all other attributes values in any given row is known as primary key . It cannot contain null entries. Through determination we can identify a key as primary key. The principle of determination is important because it is used in the definition of a central relational database concept known as functional dependence. Such candidate keys uniquely identify all other attributes values in a given row considered as primary key. SUBIN THOMAS AST JUNE 2004...
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This note was uploaded on 07/15/2011 for the course ECO 2023 taught by Professor Mr.raza during the Summer '10 term at FAU.
- Summer '10