1.3g Different Storage Types

Saving to serial storage:
Tape

• No storage
• slow to load
• takes to long to find data
• Brilliant for saving
• order that they arrive are saved
• cheapest method of saving
• physical method of storage

Sequential

• looks whats on the and saves in order
• slows down saving
• much quicker to find data

Index Sequential

•  Very fast
• Access to data that uses index's through different menus
• On credit card = hashing algorithm

Example:
Credit card

• type of card- 
1. visa 
2. country
3. banks
4. branches

Random Access

• following a hashing algorithm to decide where to store every piece of data is stored in a specific
• If it is not complicated enough it can result in clashes
• Fast