When we looked at session parameters, we have seen that although they are useful they are very limited and each time we want to use a session parameter to return a particular value, we have to edit the session parameter to either add a default value or an override value. If we want to create a session parameter that can return different values for different keys, then we create a parameter map.
Parameter maps can be thought of as simple data look-up tables. Each parameter map has two columns, a key column and a value column holding the value that the key represents. You can enter the keys and values manually, import them from an external file, or base them on query items in the model.
It is possible to export parameter maps to a file and to import parameter maps from a file. This is particularly useful if you have a large or complex parameter map. You can export the parameter map values to a file, make changes, and then import the modified parameter map back into Framework Manager...