Question-: What is the non-interactive mode to run the SAS program?
Answer: You write your entire program in a file and save it which include your SAS statements and Data step, proc step etc. and then you submit that file to be executed by operating environment immediately. As soon as this program execution start you can not interact the session in which the program is running. Once the program finishes it generates the logs, errors and output at predefined destinations in operative environment.
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Question-: What is the major difference between batch mode and interactive mode?
Answer: In case of interactive mode program runs immediately and occupies your current workstation session and you can not work until the program runs. On the other hand, in the batch mode once you submit the program you can start working on the other task in the workstation and operating environment run the program. Similarly, once the program finishes you can look or check the logs in predefined destinations.
The best feature of the batch mode is that batch execution is completely separate from the other activities at your workstation. You can not see the program while it is running, and you can’t make any correction while it is running. If you want to edit the program, edit it and create a new batch and re-submit it. This is the good approach for the large programs as well as the one which takes more time.
Question-: Can you please explain again the Proc step?
Answer: Lets have basic syntax for the PROC step
PROC Data =
Here, both PROC and DATA are the SAS keyword. PROC statement needs a procedure name e.g. PRINT and the Data specifies the dataset on which procedure would be applied. However, “DATA=� is optional, if you don’t provide this it would take most recently generated Dataset in the same session.
Question-: Can you please explain the Data step in more detail?
Answer: The basic purpose of the SAS is to analyze or process the data in some way. However, before processing the data, it should be in a proper format which SAS can understand and it is the responsibility of the DATA step to generate data in the required format from the RAW data. You can see entire flow as below
Here, raw data can be your csv file, text file or any other file, which you wanted to convert into SAS Dataset. Here first 3 block you can consider part of Data step and remaining three are the proc step.