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feat: ERD and schema update #13

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feat: ERD and schema update #13

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113 changes: 113 additions & 0 deletions ERD.md
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```mermaid
erDiagram
COMPANY {
int id PK
string name
string location
text company_description
string contact_info
}
EMPLOYEE {
int id PK
int company_id FK
string name
string email
string role
boolean is_active
}
POSITION {
int id PK
int company_id FK
int interview_flow_id FK
string title
text description
string status
boolean is_visible
text job_description
text requirements
text responsibilities
numeric salary_min
numeric salary_max
string employment_type
text benefits
date application_deadline
}
INTERVIEW_FLOW {
int id PK
string description
}
INTERVIEW_STEP {
int id PK
int interview_flow_id FK
int interview_type_id FK
string name
int order_index
}
INTERVIEW_TYPE {
int id PK
string name
text description
}
CANDIDATE {
int id PK
string firstName
string lastName
string email
string phone
string address
}
APPLICATION {
int id PK
int position_id FK
int candidate_id FK
date application_date
string status
text notes
timestamp created_at
timestamp updated_at
}
APPLICATION_STATUS_HISTORY {
int id PK
int application_id FK
string status
timestamp changed_at
}
INTERVIEW {
int id PK
int application_id FK
int interview_step_id FK
date interview_date
string result
int score
text notes
timestamp created_at
timestamp updated_at
}
INTERVIEW_EMPLOYEE {
int id PK
int interview_id FK
int employee_id FK
}
INTERVIEW_FEEDBACK {
int id PK
int interview_id FK
int employee_id FK
text feedback
timestamp created_at
}

COMPANY ||--o{ EMPLOYEE : employs
COMPANY ||--o{ POSITION : offers
POSITION ||--|| INTERVIEW_FLOW : assigns
INTERVIEW_FLOW ||--o{ INTERVIEW_STEP : contains
INTERVIEW_STEP ||--|| INTERVIEW_TYPE : uses
POSITION ||--o{ APPLICATION : receives
CANDIDATE ||--o{ APPLICATION : submits
APPLICATION ||--o{ INTERVIEW : has
APPLICATION ||--o{ APPLICATION_STATUS_HISTORY : tracks
INTERVIEW ||--|| INTERVIEW_STEP : consists_of
INTERVIEW ||--o{ INTERVIEW_EMPLOYEE : involves
INTERVIEW ||--o{ INTERVIEW_FEEDBACK : receives
EMPLOYEE ||--o{ INTERVIEW_EMPLOYEE : participates
EMPLOYEE ||--o{ INTERVIEW_FEEDBACK : provides
```
154 changes: 123 additions & 31 deletions backend/prisma/schema.prisma
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generator client {
provider = "prisma-client-js"
binaryTargets = ["native", "debian-openssl-3.0.x"]
}

datasource db {
provider = "postgresql"
url = env("DATABASE_URL")
}

model Company {
id Int @id @default(autoincrement())
name String
location String
companyDescription String
contactInfo String
employees Employee[]
positions Position[]
}

model Employee {
id Int @id @default(autoincrement())
companyId Int
name String
email String
role String
isActive Boolean
company Company @relation(fields: [companyId], references: [id])
interviews InterviewEmployee[]
feedbacks InterviewFeedback[]
}

model Position {
id Int @id @default(autoincrement())
companyId Int
interviewFlowId Int
title String
description String
status String
isVisible Boolean
jobDescription String
requirements String
responsibilities String
salaryMin Float
salaryMax Float
employmentType String
benefits String
applicationDeadline DateTime
company Company @relation(fields: [companyId], references: [id])
interviewFlow InterviewFlow @relation(fields: [interviewFlowId], references: [id])
applications Application[]
}

model InterviewFlow {
id Int @id @default(autoincrement())
description String
steps InterviewStep[]
positions Position[]
}

model InterviewStep {
id Int @id @default(autoincrement())
interviewFlowId Int
interviewTypeId Int
name String
orderIndex Int
interviewFlow InterviewFlow @relation(fields: [interviewFlowId], references: [id])
interviewType InterviewType @relation(fields: [interviewTypeId], references: [id])
interviews Interview[]
}

model InterviewType {
id Int @id @default(autoincrement())
name String
description String
steps InterviewStep[]
}

model Candidate {
id Int @id @default(autoincrement())
firstName String @db.VarChar(100)
lastName String @db.VarChar(100)
email String @unique @db.VarChar(255)
phone String? @db.VarChar(15)
address String? @db.VarChar(100)
educations Education[]
workExperiences WorkExperience[]
resumes Resume[]
}

model Education {
id Int @id @default(autoincrement())
firstName String
lastName String
email String
phone String
address String
applications Application[]
}

model Application {
id Int @id @default(autoincrement())
institution String @db.VarChar(100)
title String @db.VarChar(250)
startDate DateTime
endDate DateTime?
positionId Int
candidateId Int
applicationDate DateTime
status String
notes String
createdAt DateTime @default(now())
updatedAt DateTime @updatedAt
position Position @relation(fields: [positionId], references: [id])
candidate Candidate @relation(fields: [candidateId], references: [id])
interviews Interview[]
statusHistory ApplicationStatusHistory[]
}

model ApplicationStatusHistory {
id Int @id @default(autoincrement())
applicationId Int
status String
changedAt DateTime @default(now())
application Application @relation(fields: [applicationId], references: [id])
}

model Interview {
id Int @id @default(autoincrement())
applicationId Int
interviewStepId Int
interviewDate DateTime
result String
score Int
notes String
createdAt DateTime @default(now())
updatedAt DateTime @updatedAt
application Application @relation(fields: [applicationId], references: [id])
interviewStep InterviewStep @relation(fields: [interviewStepId], references: [id])
employees InterviewEmployee[]
feedbacks InterviewFeedback[]
}

model WorkExperience {
model InterviewEmployee {
id Int @id @default(autoincrement())
company String @db.VarChar(100)
position String @db.VarChar(100)
description String? @db.VarChar(200)
startDate DateTime
endDate DateTime?
candidateId Int
candidate Candidate @relation(fields: [candidateId], references: [id])
interviewId Int
employeeId Int
interview Interview @relation(fields: [interviewId], references: [id])
employee Employee @relation(fields: [employeeId], references: [id])
}

model Resume {
model InterviewFeedback {
id Int @id @default(autoincrement())
filePath String @db.VarChar(500)
fileType String @db.VarChar(50)
uploadDate DateTime
candidateId Int
candidate Candidate @relation(fields: [candidateId], references: [id])
interviewId Int
employeeId Int
feedback String
createdAt DateTime @default(now())
interview Interview @relation(fields: [interviewId], references: [id])
employee Employee @relation(fields: [employeeId], references: [id])
}
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