R programmers have to deal with problems when data sets exceed the RAM. All variables are defaulty stored in memory. Learn how to extract, analyze, and process data from the disk. Split-apply - combine will be used. Also, you'll learn how to create scalable codes with the bigmemory and iotools packages. Federal Housing Finance Agency data will be used in this course. This data set is publicly available and records all mortgages that were held or securitized in the period 2009 to 2015.