4.2. The DataSet Object Model

The object model begins with DataSet as the highest-level class and is collection-based. The DataSet hierarchy and its major collections are shown in Figure 4-1 (not all collections and classes are shown in the diagram). Here's a synopsis of the classes:

  • DataSet: High-level container class

  • InternalDataCollectionBase: Base for collection classes

  • Constraint and ConstraintCollection: Data constraints to ensure table and inter-table consistency

  • DataColumn and DataColumnCollection: Relational columns (attribute is the correct relational term, not to be confused with XML's attributes)

  • DataRelation and DataRelationCollection: Relations between two tables to ensure data consistency

  • DataRow and DataRowCollection: Relational tuples ...

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