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ER Diagram Practical Example
Instructor: Naveedullah Safi
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Entity Weak Entity Attribute Instructor: Naveedullah Safi
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Key Attribute Composite Attribute Instructor: Naveedullah Safi
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Multi valued Attribute
Derived Attribute Multi valued Attribute Instructor: Naveedullah Safi
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Entity Table: Employee Instructor: Naveedullah Safi
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Table: Employee Attributes Employee number Name
Instructor: Naveedullah Safi
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Table: Employee Key Attribute Employee number Name Birth Date Age
Salary Key Attribute Instructor: Naveedullah Safi
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Table: Employee Composite Attribute Employee number Name Address Age
Salary Composite Attribute Instructor: Naveedullah Safi
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Table: Employee Multi Valued Attribute Employee number Name Address
Age Salary Multi Valued Attribute Instructor: Naveedullah Safi
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Table: Employee Single Valued Attribute Employee number Name Address
Age Salary Single Valued Attribute Instructor: Naveedullah Safi
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Table: Employee Null Valued Attribute Employee number Name Address
Fax No / Tele. No Salary Null Valued Attribute Instructor: Naveedullah Safi
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Table: Employee Derived Attribute Employee number Name Birth Date Age
Salary Derived Attribute Instructor: Naveedullah Safi
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Table: Employee Stored Attribute Employee number Name Birth Date Age
Salary Stored Attribute Instructor: Naveedullah Safi
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Employee Entity Instructor: Naveedullah Safi
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Employee Attributes Name Emp_no Salary Age Birth Date
Instructor: Naveedullah Safi
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Employee Key Attribute Name Emp_no Salary Birth Date
Instructor: Naveedullah Safi
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Employee Key Attribute Name Emp_no Salary Birth Date
Instructor: Naveedullah Safi
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Employee Multi valued Attribute Name Emp_no Salary Name
Instructor: Naveedullah Safi
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Employee Multi valued Attribute Name Emp_no Salary Name
Instructor: Naveedullah Safi
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Employee Address Composite Attribute Instructor: Naveedullah Safi
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Composite Attribute Employee Name Street Address Area City
Instructor: Naveedullah Safi
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Employee Derived Attributes Name Emp_no Salary Age Birth Date
Instructor: Naveedullah Safi
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Employee Derived Attributes Name Emp_no Salary Age Birth Date
Instructor: Naveedullah Safi Attributes
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Relationship Works Link Instructor: Naveedullah Safi
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1 to 1 Relationship 1 1 Manager Department Mno Name Mno Dname Works
1 1 Department Birth Date Salary 1 to 1 Relationship Instructor: Naveedullah Safi
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Many to 1 Relationship M 1 Employee Department Empno Name Empno Dname
Works M 1 Department Birth Date Salary Instructor: Naveedullah Safi Many to 1 Relationship
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Many to Many Relationship
Empno Name PId Ptype Project Employee Works M N Start date End date Salary Instructor: Naveedullah Safi Many to Many Relationship
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ER Diagram Of Banking System
Bno Addr ER Diagram Of Banking System Bank branch Branc hes M Bank 1 Nam e 1 1 Code Addr Accts Loans M Loan Type Balanc e M Amount Loan no Acct no Acc Loan Account Type
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Continue… n n M M Loan Account Customer A_c L_c Name SSn Addres Phone
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Instructor: Naveedullah Safi
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Instructor: Naveedullah Safi
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Thank You… Instructor: Naveedullah Safi
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