There are a number of data sources that are used, each with its own requirements and quirks

The main types used are :

• A text file, also known as CSV or flat file
  Data is separated by a delimiter like a comma, colon, semicolon or another suitable character.
• An ODBC data source
  Data is in a database or application data file like excel.
  For Excel or MS Jet and types of data, you can also see this entry
• An OleDB data source
  Data is in a database or application data file like excel
• The Windows file system
  The file’s metadata is usable as field data, like creation date, file name, modified date, size of imageThe (if image data) etc
  The actual fields available will depend on what the files being stored is.