What is the purpose of a mapping table?

Mapping tables are the means to identify which device or Class the points belong to.
Sinolta allows each point to be mapped to the data collection (Masters/Client) applications only once but can be mapped to multiple data reporting (Servers, Slaves) applications multiple times.
When a point is mapped to a Master or Client device, the point becomes the child of that device, and the device becomes the parent. All points that are mapped to a Master/Client device are considered mapped points. Other points that may be mapped to reporting applications are considered orphan (with no parents) until they are mapped to a Master/Client application.
When mapping points to a Class, we are using mapping tables to link the points with Classes.