This is a data flow diagram of the food recommendation system I made, I put it in the data flow analysis of my thesis, how should I describe this diagram? To combine the diagram text

The above describes a user information management system, including different data tables and related functional modules.

Table P1 is the personal information table, which is used to store the user's personal information, including registration information.

The D1 table is a user information table for managing user information, including addition, deletion, and modification operations of user information.

The P2 table is the food information table, which is used to store information about the food, which may include name, description, picture and so on.

The D2 table is the cuisine information table, which is used to manage the cuisine information, including the addition, deletion and modification operations of the cuisine information.

The P3 table is the rating information table, which is used to store the user's rating information about the cuisine, which may include user ID, cuisine ID, rating, etc.

The D3 table is the rating information table, which is used to manage the rating information, including addition, deletion, and modification operations of the rating information.

The P4 table is the collection information table, which is used to store user's collection information, which may include user ID, cuisine ID, etc.

The D4 table is the collection information table, which is used to manage the collection information, including the addition, deletion, and modification operations of the collection information.

The P5 table is the user statistics and cuisine statistics data table, which is used to store and count user and cuisine related data information.

The data statistics module is used to statistically analyze the data of users and cuisines, which may include the number of users, the number of cuisines, the average rating and so on.

Please note that the above description is only a speculation based on the provided table names and related functional modules, and the specific table structure and functional details may need to be further defined and designed based on actual requirements.