This zip file contains five files:
1. An image that shows a schema that represents the data that is stored in an Excel spreadsheet that was shown by DeniseD on the database course run by Stanford University.
2: Three files that contain the DDL
2.1 DDL for MS SQL Server
2.2 DDL for MySQL
2.3 DDL for ANSI Standard SQL (should work with any RDBMS)
3. An XSD file of the schema (useful for understanding the difference between a schema represented in DDL and the same schema represented in XSD.