a complex data type that contains one or more members called elements
a complex type made up of one or more elements
a group of elements of the same data type
a group of values of a single data type in a column
A complex data type that groups values, called elements, of a single data type in a column. Collection data types consist of the SET, MULTISET, or LIST type constructor and an element type, which can be any data type, including a complex data type.