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## 📦 Table: `tbl_candidate_source`
**Module:** `recruitment`
**Schema:** `public`
**Purpose:** Stores candidate sources (e.g., job portal, referral, walk-in) for job applications.
**Created By:** Mahendran T
**Created On:** 2025-07-31
**Last Modified:** 2025-07-31
---
## 🧩 Columns
| Column Name | Data Type | Nullable | Default | Description |
|---------------|--------------|----------|---------|---------------------------------------------|
| `id` | SERIAL | NO | auto-increment | Primary key |
| `source_name` | VARCHAR(100) | NO | NULL | Name of the candidate source (e.g., LinkedIn, Referral) |
---
## 🗂️ Constraints & Indexes
* **Primary Key:** `id`
* **Indexes:**
* `tbl_candidate_source_pkey` on `id` (UNIQUE, BTREE)
* Consider index on `source_name` if searching/filtering frequently
---
## 🔗 Relationships
| Related Table | Relationship Type | Foreign Key | Description |
|-----------------|------------------|-----------------------------------------------|----------------------------------------------|
| `tbl_applied_jobs` | One-to-Many | `tbl_applied_jobs.candidate_source_id → tbl_candidate_source.id` | Each source can have many applied jobs |
---
## 🧬 ER Diagram (optional)
```dbml
Table tbl_candidate_source {
id serial [pk]
source_name varchar(100)
}
Ref: tbl_applied_jobs.candidate_source_id > tbl_candidate_source.id
---
```
## 🛠️ Sample SQL
```sql
CREATE TABLE tbl_candidate_source (
id SERIAL PRIMARY KEY,
source_name VARCHAR(100) NOT NULL
);
```
---
## 🕓 Change History
| Date | Author | Change Description |
| ---------- | ----------- | --------------------------- |
| 2025-07-31 | Mahendran | Initial documentation draft |