There is a relational database with the following Users table
User Id Name Age Parents Friends Colleagues ...
And there are tables Parents, Friends, Colleauges, etc. Due to specifics of database this part of User info is actually a single document that is always used as whole piece
Parents Friends Colleagues ...
Are there any advantages to remove all this tables and use the following Users table instead
User Id Name Age People
Where people are document with a special structure, for example, JSON or XML? This database is not truely relational. Will it be faster, easier to develop and maintain, etc.?