Explanation:
An SDC file is a spreadsheet created with Calc included with OpenOffice.org and StarOffice. It includes flexible cell formatting options, such as freely rotating contents, backgrounds, borders and templates. SDC files can be exported in the Microsoft Excel or Portable Document formats.
The asterisk informs the database to select all data that meets the criteria as stated in the query.
<h3>What is an Asterisk server?</h3>
Asterisk is one that changes an ordinary computer into a kind of communications server. Note that the asterisk or star symbol ( * ) is one that connote all columns.
Therefore, The asterisk informs the database to select all data that meets the criteria as stated in the query.
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