DDL = Data Definition Language
From the Wikipedia entry for DDL:
A Data Definition Language (DDL) is a
computer language for defining data
structures. The term was first
introduced in relation to the Codasyl
database model, where the schema of
the database was written in a Data
Definition Language describing the
records, fields, and "sets" making up
the user Data Model. Initially it
referred to a subset of SQL, but is
now used in a generic sense to refer
to any formal language for describing
data or information structures, like
XML schemas.
So, for databases, a DDL script is a script that creates the structure (tables, columns, indexes, ...) of a database.
