I want to know the answer to the following question:
What do database administrators closely monitor?
All the background I'm provided with is that "Data typically reside in the storage in structures that look completely different from the way the data look in the conceptual and external levels, but in ways that attempt to optimize (the best possible) these levels' reconstruction when needed by users and programs, as well as for computing additional types of needed information from the data (e.g., when querying the database).". Is that enough to answer the question?
Answer: no