The performance monitor that shows the values of SQL as being used on a daily bases is where?

I found the book online with the SQL Query Analyzer bundle.

what does the primary key and foreign key do?

yeah there are 8 files and it said to extract all the files and i did, but even the text files are blank.

i am having trouble downloading and opeing. i have saved it and extracted it to another file but then when i click on the exe file nothing happens.

ok thanks, what is sp_who, sp_help, and sp_lcok?

I can do select statements, order by, if then stuff. I can do table joins. The info i have found online from SQL Tutorials. I have SQL...

what is T-SQL? thanks for the link

well what are some basics i should know about sql?