8.5

Composite Type

A data type that combines several properties into one type, containing methods, functions, or procedures associated with it.

Subtype

A type that is derived from a supertype and inherits all supertype methods and properties.

Supertype

A base class from which subtypes are derived, providing inheritance of methods and properties.

ORM (Object Relational Mapping)

A software layer that facilitates integration between programming languages and relational databases.

CREATE TYPE AS OBJECT

A statement used to specify the code or body of each function or procedure associated with an object type.

NOT FINAL

A keyword indicating that a supertype can have subtypes and is not restricted from being inherited.

OVERRIDING

A keyword used to indicate that a derived subtype method redefines the behavior of an inherited method.

Address Type

An object type that includes properties like street, city, state, postal code, and a member function for formatting the address.

GlobalAddressType

A subtype of AddressType that adds the country property and overrides the FormatAddress function.

TotalCompensation

A member function that calculates the total compensation for an Employee or ExecutiveEmployee.