Columns
| Column | Type | Size | Nulls | Auto | Default | Children | Parents | Comments |
|---|---|---|---|---|---|---|---|---|
| id | VARCHAR | 36 | uuid() |
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| user_id | VARCHAR | 36 | √ | null |
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| language_id | VARCHAR | 36 | √ | null |
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| subject_id | VARCHAR | 36 | √ | null |
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| course_id | VARCHAR | 36 | √ | null |
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| created_at | TIMESTAMP | 19 | √ | null |
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| updated_at | TIMESTAMP | 19 | √ | null |
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Indexes
| Constraint Name | Type | Sort | Column(s) |
|---|---|---|---|
| PRIMARY | Primary key | Asc | id |
| course_id | Performance | Asc | course_id |
| language_id | Performance | Asc | language_id |
| subject_id | Performance | Asc | subject_id |
| updated_at_index | Performance | Asc | updated_at |
| user_id | Performance | Asc | user_id |
| user_id_2 | Performance | Asc/Asc/Asc | user_id + language_id + subject_id |
| user_id_3 | Performance | Asc/Asc/Asc | user_id + language_id + course_id |
Relationships
Close relationships within degrees of separation
