SQL Server: tools to show relations

I have an access to SQL Server database to query data using views (I don't have access to tables). I don't have a description about the views. What tools can I use to view dependenices and r开发者_如何学运维elations between views (common id columns, 1-N relations etc.)?

There's some great tools from Atlantis UK which are now free, including Schema Surf. Check it out.