First week: NO CLASS
Second week: FIRST :LECTURE
On the first lecture one week after new terms start, I learned a little bit what Data Information Management about. I don’t really remember every single thing, but I do remember one particular word, ERD. The directly involve with the purpose of database design. Database design means to create database model of reality, queries SQL, modeling ERD. In this lecture I saw a glimpse of what ERD means but still not completely understand it. There are attributes, relationship and entities. Example of what I learned:
Primary key : something unique.
Foreign key : something similar that link both entities.