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Fixed width format uses width to define columns and rows. This format also includes a character for padding fields to their maximum width.
Ragged right format uses width to define all columns, except for the last column, which is delimited by the row delimiter.
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What is ssis
About your question
"Ragged Right" is another option of File Type which is exactly the same as "Fixed Width", except that it gives you the option to insert a linefeed character (or CRLF, etc.) at the end of each line of data.