How to create a table?

You have at least two options. You can store the data in a database or you can store the data in XML. Both have advantages. The choice is more a matter of what you have available and your personal preferences. Which one would you prefer to use? You can choose whichever one that you want to learn, or choose based on other criteria. XML might be easier if you are not sure if the application will be used in systems without SQL Server but as far as I know you can always install free version of SQL Server but that I am not sure of. You can use XML without being concerned about installing anything extra.