Hi Eriodega,
1. **source_type = null and target_type = TABLE**:
- This indicates a write operation to the table. The source is null because there is no source table involved in the operation, only a target table that is being written to.
2. **source_type = TABLE, target_type = null**:
- This indicates a read operation from the table. The target is null because there is no target table involved in the operation, only a source table that is being read from.
3. **source_type = TABLE (table X), target_type = TABLE (table Y)**:
- This scenario represents a transformation or data movement operation where data is read from one table (table X) and written to another table (table Y). This could be part of an ETL (Extract, Transform, Load) process or a similar data pipeline.
4. **source_type = VIEW, target_type = TABLE**:
- This indicates that data is being read from a view and written to a table. The view acts as the source, and the table is the target where the data is being written.
5. **source_type = TABLE, target_type = VIEW**:
- This scenario suggests that the view is being created or updated based on the data read from the table. The table is the source, and the view is the target that is being defined or modified.