Database design for document management system

[Saurabh Sharma]

Hi everyone,

I want to design a web based DOCUMENT MANAGEMENT SYSTEM to store files on server and their meta information like File name, file upload date, user details who uploaded, file path etc. in database.

Architecture is :
a user can be present in one or more domain like Infrastructure, HR, finance
a domain can have 1 or more component (H/W, S/W, devices, Applications etc.)
a component can have 1 or more categories (Knowledge docs, Reports, S/W dumps, Logs files)
every category can have 0 or more files
like :
Users --> (1 or more)Domain --> (1 or more)Component --> (1 or more)Category --> (0 or more)Files

whose UI look like
Domain1:
-----Component1:
---------Category1
---------Category2
-----Component2:
---------Category1
---------Category2

..
..
..

users login with their credentials and cannot access files in domains it is not part of.

Please give me a sample & simple database design to work on