Question

By default R stores strings in data frames as:

Answer 1

The R store string will have a column that is used to contain a single character that is used to cover the factor.

This whole set up is done in the default terms. In addition to this, if one wants to run the behavior as a default then the argument can be used such as:

stringAsFactors = FALSE

This type of value helps in constructing the object in data.frame.

Answer 2

By default R stores strings in data frames as the single object.

A ""string"" is just a character variable which will be usually found with one or many characters.

Five main types of objects which have been used in the R  to store data is as follows:

Vector,

Multi-dimensional array,

factor,

data.frame and list.

Hope this answer helps you in correct way.