I am currently using a trial version of Matlab and I have matlab data files that were collected for 1.5 years in separate files. Within these files the data is collected almost every second, hence there would be sometimes 700 to 900 thousand rows in each of these files. I would like to know how best I can combine these files and if I will really need to create a database to store the raw data? I would like to then visualise this data over the 1.5 year period so I do need to store them all in one file. I am not familar with setting a database so will welcome suggestions on what I can do and which tutorial I can use that can help me with setting up the db or combining the files.