1. Most contemporary approaches to web development make use of the model–view– controller design pattern. Investigate this approach to application development, its relationship to the three-tier...

1. Most contemporary approaches to web development make use of the model–view– controller design pattern. Investigate this approach to application development, its relationship to the three-tier architecture and its use by PHP web application developers.

2. Define the terms:

(a) data item

(b) value

(c) literal

(d) variable

(e) operator

(f) comparison operator

(g) expression.