In DB2 Database tables, each column has its own data type depending on developer's requirements. The data type is said to be type and range of the values in columns of a table.
Built-in data types
CHAR (fixed length): Fixed length of Character strings.
VARCHAR: Varying length character strings.
CLOB: large object strings, you use this when a character string might exceed the limits of the VARCHAR data type.
VARGRAPHIC: Varying character graphic string that contains double bye characters.
DBCLOB: large object type
BLOB (varying length): binary string in large object
BOOLEAN: In the form of 0 and 1.
eXtensible Mark-up Language
XML: You can store XML data into this data type column.