DDSXTY12 — Unify name used for Aggregate and Enumerated types

1) Aggregation types (structures and unions) are referred to as both 'aggregation' types and 'aggregated' types throughout the document. See, for example, section 7.2.4.5 'Aggregation Types' and section 7.3.2.4 'Aggregated Types'.

The proposal is that we unify the name for these kinds of types and use 'Aggregate' Types. This is the common naming convention in many areas, such as C/C++ and SQL:
http://www.ibm.com/support/knowledgecenter/SGVKBA_3.2.1/com.ibm.rsct.admin/bl503_strucdat.htm
https://msdn.microsoft.com/en-us/library/81k8cwsz.aspx

2) Enumeration types are referred to as both 'enumeration' types and 'enumerated' types throughout the document. The proposal is that we unify the names for these kinds of types and use 'Enumerated' Types. This seems to be the accepted convention. An enumeration is an enumerated type.

See:
https://en.wikipedia.org/wiki/Enumerated_type
http://www.cprogramming.com/tutorial/enum.html
http://www.cs.utah.edu/~germain/PPS/Topics/C_Language/enumerated_types.html

Unify All names of Aggregate and Enumerated Types

The Specification is not consistent with it's naming of aggregate (sometimes aggregated, sometimes aggregation) and enumerated (sometimes enumerated sometimes enumeration) types. The names should be 'Aggregate' and 'Enumerated' Types.