Introducing data relationships, techniques for data manipulation, and access methods -- Combining data sets vertically: concatenating, interleaving, and appending data sets -- Combining data sets horizontally: match-merging data sets by value -- Using lookup tables to match data -- Combining summary and detail data -- Updating data sets by match-merging by value -- Modifying data sets in place -- Manipulating data from a single source -- Manipulating data with utilities and functions