Question

A DataSet object can be accessed as ----

A. a collection of tables though indices.
B.a list of objects with different types.
C. an unordered set of strings.
D. an XML file using an XML parser.

Answer 1

A DataSet object can be accessed as a collection of tables through indices, allowing management of data across multiple DataTable objects within an in-memory database.

Step-by-step explanation:

The DataSet object in the context of .NET programming can be accessed as 'A. a collection of tables through indices.' This means that the DataSet acts like a small in-memory relational database that can manage data across multiple tables that can be related to each other with DataRelation objects.

Multiple DataTable objects can be accessed by their index or name within the DataSet, and changes to this data can be processed in the application before updating the underlying database.

Access a loaded DataSet object using language or library-specific methods. For instance, in Python's Pandas, you might use dataset.iloc[] for integer-location based indexing, or dataset['column_name'] for column access.

In a machine learning context with libraries like Scikit-learn, accessing features and labels could involve dataset.data and dataset.target. The exact syntax depends on your programming environment, so check the documentation for precise instructions. Happy coding!

Therefore the answer is A. a collection of tables though indices.