Sequential or Random Access snack machines
Of Databases: As a Database Administrator (DBA) by profession and training, I understand a bit about database technology. I have learned about the early versions that required data to be read sequentially. If you had to use a phone book sequentially, that means in order to look up someone with the last name Smith, you would first have to scan past every other name in the book that came before Smith. Anderson, Barker, Cadwell, etc. For some purposes, this was acceptable, since machines were doing the work and it was much faster than a human could do the same thing. The next major improvement became what is called a Relational Database. This allows the data to be retrieved from any place in the table without needing to read all the records before it. This makes a database more efficient and practical for data sets with very large numbers of records. This allowed what we consider random data access. Of Snack Machines: Snack machines allow for the buyer to choose which product (reco...