Assumptions about the functioning of the jHIS system:

• History of all data changes (with the exception of dictionary data) is recorded
• The data are deleted from the database logically rather than physically (deleted data is recoverable)
• Access to specific functionality of the application by the logged user depends on his permissions called roles (the role is a set of predefined privileges, each of which provides access to a specific element of the system)
• Fields that fill in the forms is required are surrounded by a blue border
• The system operates on a web browser Mozilla Firefox and Google Chrome