User-Defined Types create type construct in SQL creates user-defined type create type Dollars as numeric(12,2)final create domain construct in SQL-92 creates user-defined domain types create domain person_name char(20)not null Types and domains are similar.Domains can have constraints,such as not null,specified on them. Database System Concepts,5th Edition,Oct 5.2006 4.5 @Silberschatz,Korth and SudarshanDatabase System Concepts, 5th Edition, Oct 5. 2006 4.5 ©Silberschatz, Korth and Sudarshan User-Defined Types create type construct in SQL creates user-defined type create type Dollars as numeric (12,2) final create domain construct in SQL-92 creates user-defined domain types create domain person_name char(20) not null Types and domains are similar. Domains can have constraints, such as not null, specified on them