SAP R-3 Interview Question?

• In selection screen I have three fields, plant mat no and material group. If I input plant how do I get the mat no and material group based on plant dynamically?
• On which even we can validate the input fields in module progams?
• What are client dependant objects in abap/sap?
• How data is stored in cluster table?
• What is the difference between Upload and WS_Upload ?
• Open datasets, Read datasets ( Reading and writing data to files)?
• Have you set up a back ground job ? How to create a background job without a variant ?
• Have you processed BDCs ?
• How do you send files to the legacy systems from SAP and vice versa? How does one know that the legacy files have come on to the SAP server you are working on?
• What kind of BDC programs are written ?
• Update types in Call transaction method. What is the difference?
• Call transaction method, how to capture the errors ?
• Data conversion experience?
• Experience with ABAP and Unix files?
• From Excel to ABAP - Is batch mode possible ?
• How to read files and process BDCs automatically?
• Difference between /N and /BEND?
• SM35 transaction . How to automate BDC ?
• BDC vs Direct Loads( have you used direct loads on SAP tables )?
• Recording Function?
• What are logical databases?
• What is Group by in Select statement?
• Catch Command?
• Explain Commit and Roll back?
• Difference between Insert, Update and Modify?
• What happens Update command is used without where clause ?