What is “Structured” in Structured Query Language?

Question

What does the \"Structured\" word means in SQL?

Is it because this(SQL) language statements are organized into Clauses, expressions and predicates?

Because o

Answer 1

from: http://wiki.answers.com/Q/Why_sql_is_called_structured_query_language

SQL, the standard that was later developed from Codd's work, provides a means of describing data with its natural structure only - that is, without superimposing any additional structure for machine representation purposes.