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Samenvatting Software engineering 1 - theorie analyse periode 3
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Een samenvatting van de theorie van analyse (periode 3), een subvak van software engineering 1 uit toegepaste informatica aan kdg.
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SOFTWAREENGINEERING 1
P3
KDG | 2021-22
,Inhoudsopgave
1. System sequence diagram ........................................................................................................................... 3
1.1 inleiding ........................................................................................................................................................ 3
1.1.1 Wat en hoe?.......................................................................................................................................... 4
1.2 Wat is een sequence diagram? ..................................................................................................................... 5
1.2.1 Wat is een SYSTEM Sequence diagram? ............................................................................................... 5
1.2.2 Waarom een system Sequence diagram?............................................................................................. 6
1.3 Werkwijze System Sequence Diagram opstellen .......................................................................................... 6
1.4 Heeft de Use Case interacties met andere externe systemen of actoren?.................................................... 7
1.5 Is een SSD een UML diagram? ...................................................................................................................... 8
1.6 Verschil sequence VS Interaction diagram Sequence Diagram ..................................................................... 8
2. Operation contracts .................................................................................................................................... 8
2.1 Hoe ziet een Operation Contract eruit? ........................................................................................................ 9
2.2 Voorbeeld ................................................................................................................................................... 10
2.3 Niet vergeten .............................................................................................................................................. 12
2.4 Wat staat er in die Post Conditions?........................................................................................................... 12
2.5 Oefening ..................................................................................................................................................... 13
2.6 Werkwijze: hoe een Operation Contract (OC) opstellen? ........................................................................... 15
2.7 CRUD als controle ....................................................................................................................................... 16
2.8 Template Operation Contract ..................................................................................................................... 16
3. Sequence diagrams ................................................................................................................................... 17
3.1 Inleiding ...................................................................................................................................................... 17
3.1.1 Verband SSD – OC – SD ....................................................................................................................... 17
3.1.2 Analyse à ontwerp ............................................................................................................................ 17
3.2 Introductie interactie diagram .................................................................................................................... 18
3.2.1 Wat zijn interactiediagrammen .......................................................................................................... 18
3.2.2 2 soorten ............................................................................................................................................. 19
3.3 Onderdelen van sequentie diagram............................................................................................................ 20
3.3.1 Basis elementen .................................................................................................................................. 20
3.3.2 Concepten sequentie diagram ............................................................................................................ 20
4. Activity diagrams ...................................................................................................................................... 29
4.1 Inleiding ...................................................................................................................................................... 29
4.2 Activity en Action ........................................................................................................................................ 29
4.3 Conditioneel gedrag.................................................................................................................................... 31
4.4 Parallel gedrag............................................................................................................................................ 32
4.5 Signal .......................................................................................................................................................... 33
4.6 Activity partition → swimlane .................................................................................................................... 35
4.7 Pin ............................................................................................................................................................... 35
4.7.1 List box pin .......................................................................................................................................... 36
4.8 Connector(paren) ........................................................................................................................................ 37
1
,4.9 Voorbeelden................................................................................................................................................ 38
4.10 Toepassingen ............................................................................................................................................ 38
4.11 Werkwijze ................................................................................................................................................. 39
2
, 1. System sequence diagram
Tijdens de analysefase analyseren we
• Het gedrag van het systeem : Use Cases
• De structuur van het systeem : Domain Model
Voorgaande modellen zetten we nu om in een System Sequence Diagram
Het Conceptual Class Diagram samen met System Sequence Diagram (en contracts) levert
dan alle nodige informatie om een Design van het systeem uit te werken
Modelleer interacties met SSD
• We pakken Use Cases terug vast
• Het Domain Model modelleert niet hoe Use Cases binnen het systeem werken
• System Sequence Diagrams (SSD) vullen verder aan hoe interacties (incidents,
events) op het systeem inwerken
• Domain Model gebruikt eenvoudige Class Diagrams
• SSDs gebruikt eenvoudige Sequence Diagrams
1.1 inleiding
• Sluiten zeer nauw aan bij analyse: use case beschrijvingen en domeinmodel
• Modelleert de interacties die in tekstvorm beschreven staan in use case
beschrijvingen
o Teken dus niet alle stappen in HSS en alternatieve scenario’s, enkel degene
die communicatie tussen actor en systeem voorstellen
• Geven opdrachten weer die we aan systeem geven (geen opdrachten aan actoren!):
volle lijn
• Geven mogelijke antwoorden van systeem aan actor: stippellijn
3
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