Oracle Data Types

DATA TYPES :

DATA TYPE	DESCRIPTION	MAX SIZE
VARCHAR2(SIZE)	Variable length character string having maximum length size bytes. You must specify size. We can use to store string values.	4000 bytes minimum is 1
NUMBER(SIZE)	Number having precision P and scale S, which we can use to store number values.	The precision P can range from 1 to 38. The scale can range from -84 to 127.
DATE	Valid Date range . We can use to store Date values

NULL : It is not a value and does not occupy any space.

TABLE: Table is the basic element in a database or object in database to store the data in the form of rows and columns.