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Identifying the elements of a database
Activity 1 Identifying the elements of a database X Student name Student ID Age Sex Chan Tai Man 010101 15 M Cheung Siu Ming 010112 14 Fok Wing Sze 010215 F Leung Hon Cheung 010231 Wong Fung Yi 010345 16 Y Z
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Identifying the elements of a database
Activity 1 Identifying the elements of a database Refer to the table, and answer the following questions. Identify parts X, Y and Z of the table above. X: ______________________ Y: ______________________ Z: ______________________ Part Z is the basic element of a _______________. A student suggests using ‘Student name’ as the primary key. Do you agree? Briefly explain your answer. __________________________________________________ __________________________________________________ __________________________________________________ fields records table database No. It is because the data in a primary key must be unique. Since it is possible for two students to have the same name, ‘Student name’ should not be the primary key.
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Identifying the elements of a database
Activity 1 Identifying the elements of a database Refer to the table, and answer the following questions. Identify parts X, Y and Z of the table above. X: ______________________ Y: ______________________ Z: ______________________ Part Z is the basic element of a _______________. A student suggests using ‘Student name’ as the primary key. Do you agree? Briefly explain your answer. __________________________________________________ __________________________________________________ __________________________________________________ fields records table database No. It is because the data in a primary key must be unique. Since it is possible for two students to have the same name, ‘Student name’ should not be the primary key.
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