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Web mẫu - Dịch vụ lao động chân tay Handyman
1 × 369.000 ₫
Web mẫu - Dịch vụ lao động chân tay Handyman Tổng số phụ: 369.000 ₫
Q154 l Which two are benefits of external tables?
Q154 l Which two are benefits of external tables?
- A) They can be queried while the database is in the MOUNT state like dynamic performance views.
- B) They support DELETE which transparently deletes records in the file system as if they were table rows.
- C) They can be queried, transformed, and joined with other tables without having to load the data first.
- D) They support UPDATES which transparently updates records in the file system as if they were table rows.
- E) The results of a complex join or aggregating function or both can be unloaded to a file for transportation to another database.
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