14.114 Hard Disks, Sequential Versus Random Access

My book "Patterns in Data Management" is now available both as an ebook or a print book (with color graphics!). See: http://amzn.to/1Ts3rwx This book is not a standard textbook on database techniques. This book was written extending and complementing preexisting educational videos (including this one).

What exactly is a random access? What are its major components? What is a sequential access? How to estimate the costs of a sequential access? What is track skewing? How did hard disks evolve over the last decades? What do we learn from that? Bonus Question: What does this imply for index structures?

Video for my inverted classroom "Database Systems".

The complete list of videos and additional material is available at http://datenbankenlernen.de

Computer Science, Saarland University:
Bachelor (in German): http://www.cs.uni-saarland.de/index.p...
Master (in English): http://www.cs.uni-saarland.de/index.p...
Ph.D./Grad School: http://gradschool.cs.uni-saarland.de/