User Defined Types and Large Objects

User Defined Types and Large Objects (LOBs) Your new table can include one or more
columns defined with user-defined types. User-defined types enable a single column
in a single row to contain multiple values. The multiple values can be represented as
arrays, nested tables, or objects, where an object type represents a real-world entity
such as a purchase order. (Retrieving a purchase order-type column value could
return a record that contains purchase order number, customer number, amount, and
so on.) User-defined types are created with the CREATE TYPE statement and are
described in detail in Oracle Database SQL Language Reference.
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