Address the questions below in a 250- to 500-word document so they can be included in the IT project proposal.

1. Explain what makes an eXtensible markup language (XML) document different from a regular text file.
2. Discuss factors that should be considered when deciding whether it is worth indexing an XML column in a SQL Server database.
3. Discuss the pros and cons of storing XML data in a SQL Server database rather than storing the XML as documents in a file system.