Columns
| Column | Type | Size | Nulls | Auto | Default | Children | Parents | Comments |
|---|---|---|---|---|---|---|---|---|
| CONTENT_JSON | CLOB | 4000 | √ | null |
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| DEVICE_TYPE | VARCHAR2 | 30 | √ | null |
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| PARTICIPANT_ID | VARCHAR2 | 15 | √ | null |
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| DEVICE_ID | VARCHAR2 | 100 | √ | null |
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