Define and identify the primary key in the following table:Table: Stat

1.	Define and identify the primary key in the following table:Table: StationaryS_NoS_NameS_QtyPurchaseDate101Pen1022011-12-12102Pencil2012013-02-21103Eraser902011-09-09109Sharpener902012-08-31113Clips9002011-09-09
Answer» An attribute or set of attributes which are used to identify a tuple uniquely is known as Primary key. Primary key: S_No or S_Name

Define and identify the primary key in the following table:Table: StationaryS_NoS_NameS_QtyPurchaseDate101Pen1022011-12-12102Pencil2012013-02-21103Eraser902011-09-09109Sharpener902012-08-31113Clips9002011-09-09

Answer»

An attribute or set of attributes which are used to identify a tuple uniquely is known as Primary key.

Primary key: S_No or S_Name

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Define and identify the primary key in the following table:Table: StationaryS_NoS_NameS_QtyPurchaseDate101Pen1022011-12-12102Pencil2012013-02-21103Eraser902011-09-09109Sharpener902012-08-31113Clips9002011-09-09

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