thanks reply ,

I just guess it is Oracle I am not sure  , I am new to it .

this ER diagram is from the vendor , they just...

I can't give you a web page because I do not know which product you used to generate the E/R diagram. It wasn't a SQL Server database...

• This reply was modified 2 years, 5 months ago by  patrick chan.

I can't give you a web page because I do not know which product you used to generate the E/R diagram. It wasn't a SQL Server database diagram, as...

Furthermore

What is the orange KEY symbol and IX mean ?

thanks

very thanks your reply .

is there any web page have the explanation as I still have query ?

Standard Edition (64-bit) on Windows Server 2016 Standard 6.3

SQL server 2016