This video explains how to use Database Functions in Microsoft Excel.
The tutorial covers the DSum, DMax, DMin, DAverage and the DGet functions. Each example uses named ranges and the tutor explains how to create a two way lookup using the DGet function.
Some of the examples use the date validation list option.
To get the best out of Database functions you need to create a database of records and then a selection area where the column headings match the database headings.
Set the functions to look at the selection area to calculate the required data. Basically the Database functions use the set criteria to match your selection from a database. It is easy to set up multiple criteria and may be easier to use than the very popular Vlookup or Hlookup. The functions are smaller than comparable SumIFs and CountIFs therefore use less memory in large spreadsheets.
The DGet function enables users to create a two way lookup similar to the Match and Index functions. The DGet function required a Database and a field followed by a selection area. If you use named ranges and cells the formula can be copied across without worrying about using dollar signs to lock cells and ranges.