Today, I Learned

1. DB

• To know about the history of database is also important.
  1970 E.F.Codd Relational model

• relational schema = table haedings

• attributes = fields = columns

• relational instance

• tuples, records, rows

• Attributes values are required to be atomic
  - that is, indivisible or non-decomposable.
  그러니깐 각 Cell에 들어가는 데이터 들은 set이나 list같이 더 작은 단위로 나뉘는 data가 들어갈 수 없다는 뜻.

2. AI

• QnA Section Q1.
  Q2.
  Q3.