(a) (b) What are the differences between primary key and foreign key in Entity Relationship Diagram...
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(a) (b) What are the differences between primary key and foreign key in Entity Relationship Diagram (ERD)?. Briefly discuss the use of both keys in Database Management System (DBMS). Figure Q4 shows an incomplete ERD. Redraw and complete the ERD. (11) Develop table for each entity in the ERD and include at least two (2) sample records for later development of a database system using Microsoft Access. CONTRA CLASS TENDER CONT SUPPLIER DRAWING QUANTITY SURVEYOR FIGURE Q4 (a) (b) What are the differences between primary key and foreign key in Entity Relationship Diagram (ERD)?. Briefly discuss the use of both keys in Database Management System (DBMS). Figure Q4 shows an incomplete ERD. Redraw and complete the ERD. (11) Develop table for each entity in the ERD and include at least two (2) sample records for later development of a database system using Microsoft Access. CONTRA CLASS TENDER CONT SUPPLIER DRAWING QUANTITY SURVEYOR FIGURE Q4
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