The document discusses entity-relationship (E-R) modeling concepts for database design. It defines entities, attributes, relationship sets, and keys. It describes how E-R diagrams visually represent entities, relationships, and attributes using shapes and connections. It also covers modeling concepts like cardinality constraints, participation constraints, and the choice between binary and non-binary relationships.

1. Chapter 6: Entity-Relationship Model Database System Concepts, 5th Ed . ©Silberschatz, Korth and Sudarshan See www.db-book.com for conditions on re-use

4. Entity Sets customer and loan 6.4 Database System Concepts - 5 th Edition, July 11, 2005 customer_id customer_ customer_ customer_ loan_ amount name street city number

6. Relationship Set borrower 6.6 Database System Concepts - 5 th Edition, July 11, 2005

10. Composite Attributes 6.10 Database System Concepts - 5 th Edition, July 11, 2005

12. Mapping Cardinalities 6.12 Database System Concepts - 5 th Edition, July 11, 2005 One to one One to many Note: Some elements in A and B may not be mapped to any elements in the other set

13. Mapping Cardinalities 6.13 Database System Concepts - 5 th Edition, July 11, 2005 Many to one Many to many Note: Some elements in A and B may not be mapped to any elements in the other set

17. E-R Diagram With Composite, Multivalued, and Derived Attributes 6.17 Database System Concepts - 5 th Edition, July 11, 2005

18. Relationship Sets with Attributes 6.18 Database System Concepts - 5 th Edition, July 11, 2005

26. E-R Diagram with a Ternary Relationship 6.26 Database System Concepts - 5 th Edition, July 11, 2005

33. How about doing an ER design interactively on the board? Suggest an application to be modeled. Database System Concepts, 5th Ed . ©Silberschatz, Korth and Sudarshan See www.db-book.com for conditions on re-use

39. Specialization Example 6.39 Database System Concepts - 5 th Edition, July 11, 2005

46. E-R Diagram With Aggregation 6.46 Database System Concepts - 5 th Edition, July 11, 2005

48. E-R Diagram for a Banking Enterprise 6.48 Database System Concepts - 5 th Edition, July 11, 2005

49. How about doing another ER design interactively on the board? Database System Concepts, 5th Ed . ©Silberschatz, Korth and Sudarshan See www.db-book.com for conditions on re-use

50. Summary of Symbols Used in E-R Notation 6.50 Database System Concepts - 5 th Edition, July 11, 2005

51. Summary of Symbols (Cont.) 6.51 Database System Concepts - 5 th Edition, July 11, 2005

63. Summary of UML Class Diagram Notation 6.63 Database System Concepts - 5 th Edition, July 11, 2005

65. UML Class Diagram Notation (Cont.) 6.65 Database System Concepts - 5 th Edition, July 11, 2005 * Note reversal of position in cardinality constraint depiction * Generalization can use merged or separate arrows independent of disjoint/overlapping overlapping disjoint

67. End of Chapter 2 Database System Concepts, 5th Ed . ©Silberschatz, Korth and Sudarshan See www.db-book.com for conditions on re-use

68. E-R Diagram for Exercise 2.10 6.68 Database System Concepts - 5 th Edition, July 11, 2005

69. E-R Diagram for Exercise 2.15 6.69 Database System Concepts - 5 th Edition, July 11, 2005

70. E-R Diagram for Exercise 2.22 6.70 Database System Concepts - 5 th Edition, July 11, 2005

71. E-R Diagram for Exercise 2.15 6.71 Database System Concepts - 5 th Edition, July 11, 2005

73. Figure 6.8 6.73 Database System Concepts - 5 th Edition, July 11, 2005

74. Figure 6.15 6.74 Database System Concepts - 5 th Edition, July 11, 2005

75. Figure 6.16 6.75 Database System Concepts - 5 th Edition, July 11, 2005

76. Figure 6.26 6.76 Database System Concepts - 5 th Edition, July 11, 2005

77. Figure 6.27 6.77 Database System Concepts - 5 th Edition, July 11, 2005

78. Figure 6.28 6.78 Database System Concepts - 5 th Edition, July 11, 2005

79. Figure 6.29 6.79 Database System Concepts - 5 th Edition, July 11, 2005

80. Figure 6.30 6.80 Database System Concepts - 5 th Edition, July 11, 2005

81. Figure 6.31 6.81 Database System Concepts - 5 th Edition, July 11, 2005

82. Alternative E-R Notations Figure 6.24 6.82 Database System Concepts - 5 th Edition, July 11, 2005