Datatypes available in Oracle PL/SQL ?

We have four major category of data types in Oracle PL/SQL :

Scalar data types : Which have atomic values and don't have internal components, such as NUMBER, VARCHAR2, DATE, CHAR, LONG, BOOLEAN.

Composite data types : Which have internal components and can be accessed individually, such as RECORD & TABLE.

Reference Data Type : Which have the reference of other data items like cursor variables in case of ref-cursors.

Large Object Data Type : Which contains the pointers to large objects stored seperately like vedio, test etc.