Database name, logical name, physical name Difference

Question: Or, create a database has three names, one is the one behind create, one is the name=, the other is the filename=, what is the difference between the three names, what are the different roles,

Answer: Database name
This is the name of the new repository. The database name must be unique within the instance of SQL Server and must conform to the rules of the identification code.
Database logical Name
This is the logical name that is used in SQL Server when referencing the archive. Logical_file_name must be unique in the database and must conform to the rules of the identification code.

Physical file name
Refers to the name of the database file, which can be divided into data and log file names

Database name, logical name, physical name Difference