You can filter data in Excel based on either certain parameters in columns or over the whole sheet, and you can later unfilter the sheet.

How to Remove Duplicates That Are Case Sensitive in Excel 2007. By definition, Microsoft Excel 2007 considers a duplicate to be a row of data that matches another row in your worksheet exactly.

Excel tables have many benefits that regular spreadsheets lack. The biggest is the option to use data from multiple tables to create queries and reports.