Managing XML and Semistructured Data

In this lecture

Review of Schemas so far

Schema Extraction
(From Data)

Schema Extraction: Sample Data

Lower Bound Schema Extraction

Lower Bound Schema Extraction

Lower Bound Schema Extraction

Upper Bound Schema Extraction

Upper Bound Schema Extraction

XML
Document Type Definitions

Very Simple DTD

Very Simple DTD

Content Model

Attributes in DTDs

Attributes in DTDs

Attributes in DTDs

Attributes in DTDs

Using DTDs

DTDs as Grammars

DTDs as Grammars

DTDs as Schemas