Use Case Diagram
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The document discusses use case diagrams for systems analysis and design. It provides examples of use case diagrams for an appointment system and an ATM system. Key elements of use case diagrams are described, including actors, use cases, relationships like generalization, include and extend, and the system boundary. The ATM system example demonstrates how a use case diagram can model the interactions between an actor (user) and the various functions of an ATM machine like checking balance, transferring money, withdrawing money and logging out.
Use Case Diagram
- 1. Systems Analysis and Design By : Ajeng Savitri P, M.Kom Pertemuan 14 Prepared by Kevin C. Dittman for Systems Analysis & Design Methods 4ed by J. L. Whitten & L. D. Bentley
- 2. • Learning Unified Modeling Language (UML)
- 4. System Analysis and Design with UML 1. System Analysis 1. Business Process Identification • Use Case Diagram 2. Business Process Modeling • Activity Diagram or Business Process Modeling Notation (BPMN) 3. Business Process Realization • Sequence Diagram (Buat untuk setiap use case dengan menggunakan pola Boundary-Control-Entity) 4
- 5. Use Case Diagrams • Summarized into a single picture • All of the use cases for the part of the system being modeled • Use case represents the discrete activities performed by the user • Use Case Diagram tells what the system will do • Good for communicating with users 5
- 6. Syntax for an Use Case Diagram • Actor • person or system that derives benefit from and is external to the subject • Use Case • Represents a major piece of system functionality • Association Relationship • Include Relationship • Extend Relationship • Generalization Relationship <<extends>> <<includes>> 6
- 7. Use Case • A major piece of system functionality • Can extend other Use Cases • Placed inside system boundary • Labeled with descriptive verb - noun phrase Use Case 7
- 8. System Boundary • Includes the name of the system inside or on top • Represents the scope of the system • Actors are outside the scope of the system Boundary 8
- 9. Actor • A person or another system that interacts with the current system • A role, not a specific user • Provides input, receives output, or both actor Actor/Role 9
- 10. Association Relationship • Links actor and the Use Case • Shows two-way communication • If one-way, arrows are used • * is for "multiplicity of the Association" * * 10
- 11. Extends Relationship • Extends Use Case to include Optional behavior • Arrow points from the extension Use Case to the base Use Case extend extend Make Appointment Make Payment Arrangement 11
- 12. Include Relationship • Include one Use Case from within another • Arrow points from base Use Case to the included Use Case include include Create New Patient Make New Patient Appointment 12
- 13. Generalization Relationship • A specialized Use Case to a more generalized Use Case • Arrow points from specialized to general Use Case Make Appointment Make Old Appointment 13
- 14. Use Case Diagram for Appointment System 14
- 15. Use Case Diagram with Specialized Actor 15
- 16. Extend and Include Relationships 16
- 17. Case Study: ATM System 17
- 18. ATM System 18
- 19. ATM System Layar Kotak Uang Kotak Kartu Kotak Kuitansi 19
- 20. Masukkan PIN: Kotak Uang Kotak Kartu Kotak Kuitansi 20
- 21. Menu Utama 1. Melihat Saldo 2. Mentransfer Uang 3. Mengambil Uang 4. Logout Kotak Uang Kotak Kartu Kotak Kuitansi 21
- 22. Menu Melihat Saldo 1. Saldo anda adalah …. Kotak Uang Kotak Kartu Kotak Kuitansi 22
- 23. Menu Mentransfer Uang 1. No Account Penerima: Kotak Uang Kotak Kartu Kotak Kuitansi 23
- 24. Menu Mentransfer Uang 1. Jumlah uang yang dikirim: Kotak Uang Kotak Kartu Kotak Kuitansi 24
- 25. Menu Mentransfer Uang 1. Uang berhasil terkirim Kotak Uang Kotak Kartu Kotak Kuitansi 25
- 26. Menu Mengambil Uang 1. Jumlah uang yang diambil: Kotak Uang Kotak Kartu Kotak Kuitansi 26
- 27. Menu Mengambil Uang Uang berhasil diambil Kotak Uang Kotak Kartu Kotak Kuitansi 27
- 28. Use Case Diagram uc UCD - Sistem ATM Pengguna Sistem ATM Memasukkan Kartu Memasukkan PIN Mengecek Saldo Mentransfer Uang Mengambil Uang Melakukan Logout «include» 28
- 29. Use Case Diagram (Alternatif) uc Sistem ATM Sistem ATM Pengguna Memasukkan Kartu Memasukkan PIN Memilih Transaksi Melihat Saldo Mengirim Uang Mengambil Uang Melakukan Logout Admin Mengganti Kotak Deposit «include» «extend» «extend» «extend» 29