Do OLE DB tabular data providers expose result data in the form of rowsets (a tabular abstraction similar to a table)?

Difficulty: Easy

Correct Answer: Correct

Explanation:


Introduction / Context:
OLE DB generalizes data access beyond strictly relational sources. One of its central abstractions is the rowset, which represents tabular data. This question asks whether OLE DB tabular providers present data as rowsets.



Given Data / Assumptions:

  • OLE DB defines rowset interfaces so consumers can iterate rows/columns.
  • Even nonrelational sources can expose tabular views.
  • Consumers use rowset interfaces to read results from commands/queries.


Concept / Approach:
Rowsets are the standard OLE DB abstraction for tabular results. Providers that deliver tabular data (for example, SQL databases, spreadsheets, CSVs, or directory listings) return rowsets so that consumers can fetch rows sequentially, discover schema, and read column values. Therefore, it is correct to say that OLE DB tabular providers present data as rowsets.



Step-by-Step Solution:

Issue a command (ICommand) against a provider.Open the results as a rowset (IOpenRowset/ICommand::Execute returns a rowset).Iterate rows via rowset fetch methods; access columns via accessors/bindings.Map the rowset to higher-level objects (e.g., ADO Recordset) when desired.


Verification / Alternative check:
Review OLE DB documentation for rowset interfaces (IRowset, IAccessor, IColumnsInfo); they define the tabular pattern used by consumers.



Why Other Options Are Wrong:

  • It is not limited to relational DBMS providers—any tabular provider can expose a rowset.
  • ADO Recordset is an optional wrapper, not a requirement.
  • Consumer applications do not change the underlying provider abstraction.


Common Pitfalls:
Assuming OLE DB is tied to SQL; misunderstanding that rowsets can represent many structured sources.



Final Answer:
Correct

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