PostgreSQL Data type

1. Boolean
   1. True
   2. False
   3. NULL
2. Character
   1. Char(n)
   2. Varchar(n)
   3. Text : 문자길이 제한이 없음
3. Number
   1. Integers
      1. Small integer (smallint)
      2. Integer (int)
      3. Serial
   2. Floating-point number
      1. Float(n)
      2. Real or Float8
      3. Numeric or Numeric(p,s)
4. Temporal Data Type
   1. Date : date value only
   2. Time : day value
   3. Timestamp : date + time
   4. Interval : periods of time
   5. Timestamptz : timestamp + time zone data
5. Special Data Type
   1. Box : a rectangular box
   2. Line : a set of points
   3. Point :  a geometric pair of numbers
   4. Lseg : a line segment
   5. Polygon : a closed geometric
   6. Inet : an IP4 address
   7. Macaddr :a  MAC address
6. Arrays Data Type
   

출처 : https://www.youtube.com/watch?v=aUfPf-clLLs