public void Delete( 
   Description description
)

// Create a TableDescription object
TableDescription tableDescription = new TableDescription(table.GetDefinition());

// Create a SchemaBuilder object
SchemaBuilder schemaBuilder = new SchemaBuilder(geodatabase);

// Add the deletion of the table to our list of DDL tasks
schemaBuilder.Delete(tableDescription);

// Execute the DDL
bool success = schemaBuilder.Build();

// Create a FeatureClassDescription object
FeatureClassDescription featureClassDescription = new FeatureClassDescription(featureClass.GetDefinition());

// Create a SchemaBuilder object
SchemaBuilder schemaBuilder = new SchemaBuilder(geodatabase);

// Add the deletion fo the feature class to our list of DDL tasks
schemaBuilder.Delete(featureClassDescription);

// Execute the DDL
bool success = schemaBuilder.Build();

// Deleting a FeatureDataset named as 'Parcel_Information'

FeatureDatasetDefinition featureDatasetDefinition = geodatabase.GetDefinition<FeatureDatasetDefinition>("Parcel_Information");
FeatureDatasetDescription featureDatasetDescription = 
  new FeatureDatasetDescription(featureDatasetDefinition);

SchemaBuilder schemaBuilder = new SchemaBuilder(geodatabase);

// Delete an existing feature dataset named as 'Parcel_Information'
schemaBuilder.Delete(featureDatasetDescription);
schemaBuilder.Build();