Generally, the number of rows in a truth table depends on the number of Variables. Here we have 3 Variables: p,q and r. Each of them can have either the value of 1 or 0, which gives us 2*2*2 possibilities, or 2³, that is 8 possibilities and 8 rows:
The database technology that is best suited to hold the session state in this example is the Amazon DynamoDB.
Amazon DynamoDB is a document database which helps in delivering high quality and fast cperformance at any scale. It can be used to scale to hundreds of thousands of concurrent users as it's multi-active, and has a durable database that has built-in security.
The Internet Protocol (IP) is the method or protocol by which data is sent from one computer to another on the Internet , so basically like sending a email to one another .
As you know the on going situation we are in, barcodes can be really useful for an example using them to check into a building that way when there is a infected person it is a really esay process to track down people that have been in that area.