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Er diagram practical examples
This document discusses entity relationship (ER) diagrams and provides examples. It introduces key concepts for ER diagrams like entities, attributes, key attributes, composite attributes, multi-valued attributes, derived attributes, and relationship types. Examples are given for an employee entity including its attributes and relationships. An ER diagram is also shown for a banking system to illustrate entities, relationships and cardinalities.
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Er diagram practical examples
- 1. What to do? How to do ? What kind of Data should be considered? ER Diagram Practical Example Prepared By… Rahul Khanwani BinaryBuzz.Wordpress.com Rahul Khanvani Binarybuzz. Wordpress. com
- 2. Entity Weak Entity Attribute Rahul KhanvaniBinarybuzz.Wordpress.com
- 3. Key Attribute Composite _________ Attribute Rahul KhanvaniBinarybuzz.Wordpress.com
- 4. Derived Attribute Multi valuedAttribute Rahul Khanvani Binarybuzz.Wordpress.com
- 5. Table: Employee Entity Rahul KhanvaniBinarybuzz.Wordpress.com
- 6. Table: Employee Employee number Name Attributes Rahul KhanvaniBinarybuzz.Wordpress.com
- 7. Table: Employee Employee number Name BirthDate Age Salary Key AttributeRahul Khanvani Binarybuzz.Wordpress.com
- 8. Table: Employee Employee number Name AddressAge Salary Composite Attribute Rahul Khanvani Binarybuzz.Wordpress.com
- 9. Table: Employee Employee number Name AddressAge Salary Multi Valued Attribute Rahul Khanvani Binarybuzz.Wordpress.com
- 10. Table: Employee Employee number Name AddressAge Salary Single Valued Attribute Rahul Khanvani Binarybuzz.Wordpress.com
- 11. Table: Employee Employee number Name AddressFax No / Tele. No Salary Null Valued AttributeRahul Khanvani Binarybuzz.Wordpress.com
- 12. Table: Employee Employee number Name BirthDate Age Salary Derived Attribute Rahul Khanvani Binarybuzz.Wordpress.com
- 13. Table: Employee Employee number Name BirthDate Age Salary Stored Attribute Rahul Khanvani Binarybuzz.Wordpress.com
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- 15. Employee Attributes Emp_no Birth Date Age Salary Name Rahul KhanvaniBinarybuzz.Wordpress.com
- 16. Key Attribute Emp_no Employee Birth Date Salary Name Rahul KhanvaniBinarybuzz.Wordpress.com
- 17. Employee Key Attribute Emp_no Birth Date Salary Name Rahul KhanvaniBinarybuzz.Wordpress.com
- 18. Employee Emp_no Name Salary Name Multi valued Attribute Rahul KhanvaniBinarybuzz.Wordpress.com
- 19. Employee Multi valued Attribute Emp_no Name Salary Name Rahul KhanvaniBinarybuzz.Wordpress.com
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- 22. Employee Emp_no Birth Date Age Salary Name Derived Attributes Rahul KhanvaniBinarybuzz.Wordpress.com
- 23. Employee Derived Attributes Emp_no Birth Date Age Salary Name Rahul KhanvaniBinarybuzz.Wordpress.com
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- 25. Manager Mno Name Salary Birth Date Department Mno Dname Works 11 1To 1 RelationshipRahul Khanvani Binarybuzz.Wordpress.com
- 26. Employee Empno Name Salary Birth Date Department Empno Dname Works 1M ManyTo 1 RelationshipRahul Khanvani Binarybuzz.Wordpress.com
- 27. Employee Empno Name Salary Project PId Ptype Works NM ManyTo Many Relationship Start date End date Rahul Khanvani Binarybuzz.Wordpress.com
- 28. ER Diagram OfBanking System Bank Bank branch Branc hes Account Acct no Balanc e Acc Type Accts Loans Loan Loan no Amount Loan Type 1 M 1 M 1 M Bno Addr Nam e Code Addr Rahul Khanvani Binarybuzz.Wordpress.com
- 29. Continue… Account Loan Customer SSn Name Addres s A_cL_c n M n M Phone Rahul Khanvani Binarybuzz.Wordpress.com
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