Database Filters

Filtering a database is a common operation to select records based on values of some of the fields.  It is applied on demand, and results in a subset of the records being selected.  While the database is filtered, plotting or statistical operations use only those records which meet the criteria of the filter.  The filter is a boolean expression, which might be composed of many sub-expressions, which allows the program to unambiguously pick records that either match or do not match the filter.

You can filter by text fields, where a wildcard can be useful, or by numeric fields.

Apply filters in MICRODEM.

Last revision 4/6/2014