| static DifferenceColumnSummary.Builder | DifferenceColumnSummary. builder() | Create a new builder. | 
| DifferenceColumnSummary.Builder | DifferenceColumnSummary.Builder. columnName(String columnName) | The name of the difference column. | 
| DifferenceColumnSummary.Builder | DifferenceColumnSummary.Builder. copy(DifferenceColumnSummary model) |  | 
| DifferenceColumnSummary.Builder | DifferenceColumnSummary.Builder. differenceType(DifferenceColumn.DifferenceType differenceType) | The type of the SDM masking policy difference column. | 
| DifferenceColumnSummary.Builder | DifferenceColumnSummary.Builder. key(String key) | The unique key that identifies the SDM masking policy difference column. | 
| DifferenceColumnSummary.Builder | DifferenceColumnSummary.Builder. maskingColumnkey(String maskingColumnkey) | The unique key that identifies the masking column represented by the SDM masking policy
difference column. | 
| DifferenceColumnSummary.Builder | DifferenceColumnSummary.Builder. objectName(String objectName) | The database object that contains the difference column. | 
| DifferenceColumnSummary.Builder | DifferenceColumnSummary.Builder. plannedAction(DifferenceColumn.PlannedAction plannedAction) | Specifies how to process the difference column. | 
| DifferenceColumnSummary.Builder | DifferenceColumnSummary.Builder. schemaName(String schemaName) | The database schema that contains the difference column. | 
| DifferenceColumnSummary.Builder | DifferenceColumnSummary.Builder. sensitiveColumnkey(String sensitiveColumnkey) | The unique key that identifies the sensitive column represented by the SDM masking policy
difference column. | 
| DifferenceColumnSummary.Builder | DifferenceColumnSummary.Builder. sensitiveTypeId(String sensitiveTypeId) | The OCID of the sensitive type associated with the difference column. | 
| DifferenceColumnSummary.Builder | DifferenceColumnSummary.Builder. syncStatus(DifferenceColumn.SyncStatus syncStatus) | Indicates if the difference column has been processed.Use GetDifferenceColumn operation
to track whether the difference column has already been processed and applied to the
masking policy. | 
| DifferenceColumnSummary.Builder | DifferenceColumnSummary.Builder. timeLastSynced(Date timeLastSynced) | The date and time the SDM masking policy difference column was last synced, in the format
defined by RFC3339 . | 
| DifferenceColumnSummary.Builder | DifferenceColumnSummary. toBuilder() |  |