Database Management

Frenchman Basile Bouchon Correct Answer: (First method to store data) He devised a way to store the patterns of thread in a loom that previously were set manually. How date has been processed Correct Answer: Punch Cards --> magnetic tape --> magnetic disk --> cds / dvds --> ssds / hdds Punchcard Correct Answer: A system whereby numbers could be represented by holes punched in specific locations on a card. Herman Hollerith created and patented the system. Data stored on cards...

Normalization Correct Answer: is the process of removing redundant data from non-key columns in a relation (table). Redundant data will only apply to Correct Answer: non-key attributes. Lossless Correct Answer: describes the requirement that all existing columns must eventually be placed into a table. The general three steps to normalize data: Correct Answer: 1. first normal form (1NF) 2. second normal form (2NF) 3. third normal form (3NF) ----------------------------------- 4. ...