Which level of data abstraction describes only part of the entire database and simplifies user interaction by providing a focused view?

The level of data abstraction that describes only part of the entire database and simplifies user interaction by providing a focused view is known as the "View Level" or "External Level".

Here are the steps to understand this:

1. Data abstraction in databases is the levels of representation to simplify users' interactions with the system. There are three levels of data abstraction: Physical, Logical, and View.

2. The Physical Level is the lowest level of abstraction. It describes how the data is stored in the database physically and this level is handled by the database administrators.

3. The Logical Level is the next level of abstraction. It describes what data is stored in the database and what relationship exists among those data.

4. The View Level is the highest level of abstraction. It describes only part of the entire database. The view level exists to simplify user interaction with the system, as different users may need to see different views of the database.

So, the answer to your question is the View Level.