Iterative SDLCs are often referred to as "______ methods" because they allow flexibility as development progresses.

All of the following are drawbacks to buying goods online EXCEPT ________

A) the consumer may have to wait days for the product to be delivered B) returning a product may be a hassle and require additional delivery charges C) the consumer cannot see the exact color or feel the texture of a product D) the consumer must pay credit card fees for using a credit card online

A field property that requires the user to enter specific values into a field is called a(n) ________ rule

Fill in the blank(s) with correct word