Csc 8711, Databases and the Web - Project 3

Due: Sunday, March 10th
Individual Assignment.

XML Parsing

Consider the concept of a complex attribute in the Entity-Relationship data model. A brief definition and explanation is given here. We will consider an XML coding of complex attributes shown in the following examples:

• schema1.xml, instance11.xml, instance12.xml.
• schema2.xml, instance21.xml, instance22.xml, instance23.xml.
• schema3.xml, instance31.xml.

1. Write an XML Schema specification for the composite attribute schema documents.
2. Write a Java program (application) that use a DOM parser to validate a composite attribute instance document against a composite attribute schema document. You should accept the xml files as command line arguments as shown below:

   $java CAValidator schema3.xml instance32.xml
   instance32 conforms to schema in schema3
   or
   instance32 does not conform to schema in schema3
   (error message??)