Permanent and Temporary data sets

[San_0611]

libname cert 'file  location';

data  work.tds  cert.acc1  cert.acc2;

   set sas.emp;

run;

In the  above  program how  many  permanent and temporary  data  sets  are  read.

Please help .

Thanks  in advance. 

[RW9]

Well, your question "In the  above  program how  many  permanent and temporary  data  sets  are  read." - there is only one dataset "read", thats on the set line.  The library sas is not shown however, so can't say about that.  I also don't think the question is about "read" unless its a trick question.  The reason is there are 3 datasets "written", one to temporary work area, 2 others are written to the physical library cert.

[San_0611]

Sorry , the question is how many temporary and permanent data sets
are there in above program .

[RW9]

As above:
work - this is a temporary SAS created library

cert - this is created by you in the code and points to the physical location, so anything saved into there is permanent.

sas - this is not shown in the code, so I can't tell you.

So 2 permanent, 1 temporary, and 1 unknown.