Analyze the requirements of the application

[fveracoechea]

Analyze the requirements to design the class structure and tables of the database, tasks:

• [x] understand requirement and needs

• [x] list possible class model

• [x] model classes

• [x] modeling tables and their fields

• [x] develop database diagram

[OxoftGroup]

just now solved, the development objectives were met with the contribution made in the pull request # 7