What type of query is required to mark records as exported in DB Once mode?

What type of query is required to mark records as exported in DB Once mode?

• A. An INSERT query
• B. An UPDATE query
• C. A SELECT query
• D. A DELETE query

Answer: (B)

To mark records as exported in DB Once mode, an UPDATE query is needed. This is because the records already exist in the database, and marking them as exported requires modifying their current state to reflect that change. In this context, the UPDATE query can change specific fields in the existing records to indicate that they have been processed or exported. Typically, this might involve setting a status column to "exported" or adjusting a timestamp field to reflect the export time. In contrast, an INSERT query would create new records rather than changing existing ones, which is not applicable here. A SELECT query would retrieve data without making any changes, and a DELETE query would remove records entirely instead of marking them as exported. Hence, the appropriate method for indicating that records have been exported is to use an UPDATE query.

To mark records as exported in DB Once mode, an UPDATE query is needed. This is because the records already exist in the database, and marking them as exported requires modifying their current state to reflect that change.

In this context, the UPDATE query can change specific fields in the existing records to indicate that they have been processed or exported. Typically, this might involve setting a status column to "exported" or adjusting a timestamp field to reflect the export time.

In contrast, an INSERT query would create new records rather than changing existing ones, which is not applicable here. A SELECT query would retrieve data without making any changes, and a DELETE query would remove records entirely instead of marking them as exported. Hence, the appropriate method for indicating that records have been exported is to use an UPDATE query.