Parameters are containers for variable data values or those values that do not originally exist in the data source.
For instance, we can create a parameter field by setting a condition to it that it can take only of a certain type and a particular range.
Similarly, parameters gives us the flexibility to give any condition for the field like less than, greater than, top five, top ten etc.
A parameter can be a string value, a numeric value, a range of numbers, a currency etc.