Database Physical Structure & Internals: SQL server internals Allocation Map is important for DBAs. It will help to understand the database internals. Database: A Database is a collection of data that is stored (or) organized. We can manage and access data easily. When we create a new database, by default two files will be created physically. We can create more than one log files and data files (NDF). Data file (MDF) Log file (LDF) Data File: All the data will be stored in a data file. Internally the data’s are stored in data pages. A database file has unique FileID and PageID. Log files do not have pages. They have…