chapter 1 before the advent of database systems
1.1 Data is any given information.
1.2 A place where the data is being stored
1.3 A place inside a field that contains data
1.4 Places where you can store a lot of thing containing data
2 Data redundancy is when a field needs to update in more than one table dus replacing data
3 In a file-based system all the file can only be accesed by one person and it creates more date redundacy
4 Data is information put in a system sso all data is information but not all information is data
5.1 This file contains 7 records
5.2 There are 5 fields per record
5.3 You would need to add another file for which city the client is in
5.4 I would add another field containing the information of the city the client is in