When expanded, it may be 5-6 times as big. Compression is used to reduce storage stace and speed modem downloads. They are occasionally formatted for a particular analysis software . Over the years, certain software has assumed major popularity and thus data often are ordered specially for it. Fortunately, most analysis software can translate one format into another.
Some generic forms exist such as tab delimited , space delimited , and comma delimited .
Choose one of these if available and an exact format match to your analysis software isn't. And for each case stores variables such as age, income and bank balance. This software's prime function is to store and retrieve data in various forms. One could ask the database for all cases where age was under 21 years. View the database system much like a library that facilitates the storage and retrieval of large data collections.