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Database systems
What you will learn:
What else you will learn:
Data != information!
DB, DBMS
Why DBMS?
DBMS is a go-between
DBMS: advantages
Types of DBs: based on user count
Types of DBs: based on location
Types of DBs: based on content
Types of DBs: based on data currency
Types of DBs [cont'd]
Types of DBs: based on the structure of contained data
Early DBs: file systems
File systems
File system
File systems: problems
'Structural' dependence (not a good thing!)
Structural dependence [cont'd]
Redundancy of data (again, not a good thing!)
Why is redundancy not a good thing?
The three types of data anomalies
DB systems
DB vs file system
DBMS
DBMS [cont'd]
DBMS [cont'd]
How DBs could be "bad"
