What does physical data independence mean in a database?

#The physical data independence in the database means that the user's application and the data in the database stored on the disk are independent of each other.

Data independence includes the physical independence of data and the logical independence of data.

Physical independence means that the user's application and the data in the database stored on the disk are independent of each other. That is, how the data is stored on the disk is managed by the DBMS. The user program does not need to know. What the application program has to deal with is only the logical structure of the data. In this way, when the physical storage of the data changes, the application program does not need to change.

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