forked from hasslesstech/edu-dis-labs
лаб4: додав BE-модель
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# Проєктування системи
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# Проєктування бази даних
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## BE модель
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Вбудовування зображень діаграм здійснюється з використанням сервісу [plantuml.com](https://plantuml.com/).
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В markdown-файлі використовується опис діаграми
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```md
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<center style="
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<center style="
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border-radius:4px;
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border-radius:4px;
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@startuml
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@startuml
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participant Client
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entity Account
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entity Account.username <<TEXT>>
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entity Account.password <<TEXT>>
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participant SR as "Service Registry"
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entity Survey
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entity Survey.name <<TEXT>>
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entity Survey.duration <<TEXT>>
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entity Survey.isPaused <<BOOLEAN>>
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entity Survey.isNamed <<BOOLEAN>>
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participant Service
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entity Question
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entity Question.text <<TEXT>>
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Service -> SR : register
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entity Responce
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SR -> SR
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entity Responce.value <<TEXT>>
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SR --> Service
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...
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SR -> Service: heartbeat
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Account.username --* Account
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SR <-- Service: health
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Account.password --* Account
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...
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Client -> SR: find
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Survey.name --* Survey
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Client <-- SR: service endpoint
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Survey.duration --* Survey
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Client -> Service: request
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Survey.isPaused --* Survey
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Client <-- Service: response
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Survey.isNamed --* Survey
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Responce.value -u-* Responce
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Question.text -u-* Question
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@enduml
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Account "1,1" -- "0,*" Survey
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Survey "1,1" -- "0,*" Question
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</center>
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Question "1,1" -r- "0,*" Responce
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```
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Account "0,1" -r- "0,*" Responce
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яка буде відображена наступним чином
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<center style="
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border-radius:4px;
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border: 1px solid #cfd7e6;
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box-shadow: 0 1px 3px 0 rgba(89,105,129,.05), 0 1px 1px 0 rgba(0,0,0,.025);
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padding: 1em;"
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>
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@startuml
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@startuml
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participant Client
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participant SR as "Service Registry"
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participant Service
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Service -> SR : register
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SR -> SR
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SR --> Service
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...
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SR -> Service: heartbeat
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SR <-- Service: health
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...
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Client -> SR: find
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Client <-- SR: service endpoint
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Client -> Service: request
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Client <-- Service: response
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@enduml
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@enduml
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