What is the database from the perspective of database system management?

What is the database from the perspective of database system management?

From a static perspective, databases are data files and related files stored in the operating system. However, only these files cannot constitute a database. It also needs to process and manage these files.Program(Special Note: includes the data recorded in the management and processing of files and related data ). Even in this way, it still cannot constitute a real database. I forgot to mention the most critical point here. These programs are processes (threads) that need to be run into the operating system ). In this way, an external program can access its data. More importantly, it can associate these files as an organic whole. This is very important for database system management.