Which strategy is NOT supported by Data Sync for data loading?

Data Sync is a feature designed to facilitate data loading into an Oracle Autonomous Database seamlessly and efficiently. It is particularly useful for ensuring that data is kept in sync from various sources, and it supports multiple strategies for this purpose.

The strategy of deleting entire tables is not supported by Data Sync. This limitation is important because Data Sync focuses on merging and synchronizing data rather than managing the lifecycle of entire database objects. When there's a need to delete records or apply changes, other methods would typically be more appropriate to ensure data integrity and manage existing records without the potential risks associated with outright removal of tables.

In contrast, Data Sync supports performing incremental data loads, which allows for data to be updated with only the new or changed entries rather than reloading everything. Additionally, it can handle merging data from multiple sources, allowing for a cohesive view across different datasets. Rolling deletes refers to a controlled method of deleting records over time and is more about data management than the outright removal of tables, which aligns with Data Sync's capabilities of modifying existing data rather than structural changes.