What type of software can be used without oaying a livense fee and can be modified

A.) generate scaffolding to create database for your application. develop all the entities identified in assignment #2. add any additional that may be identified later. b.) add data validation rules to the models that are appropriate for your application and data. c.) create links for each scaffold in the header section. part 2: application updates [30 points] a.) add two additional views to the "home" controller you created in assignment #1. b.) the two views should be named as “privacy" and "". c.) link the two newly created views in the footer section. hint: you would need to modify the “home" controller definition and create “privacy. html. erb" and “.html. erb" files in appropriate locations.

Awell-diversified portfolio needs about 20-25 stocks from different categories is this true or false?

List a few alternative options and input and output over the standerd keyboard and monitor. explain their functioning in details.