This manual frequently suggests you that save the Transact-SQL statements you use to create or modify user databases and database objects. The easiest way to do this is to create or copy the statements to an ASCII-formatted file. You can then use the file to supply statements to isql if you need to re-create databases or database objects later.
The syntax for using isql with an ASCII-formatted file is the following, where filename is the full path and file name of the file that contains Transact-SQL statements:
isql -Uusername -ifilename
On UNIX and other platforms, use the less than symbol (<) to redirect the file.
The Transact-SQL statements in the ASCII file must use valid syntax and the go command.