You can use External Data to store a table of data that has been retrieved; you can do this using the storage capabilities of either the Cargo or Semantic MediaWiki extensions. Once the data has been stored, it can then be queried, aggregated, displayed etc. on the wiki by that extension.

The easiest way to do such storage is to call #display_external_table on the data, and include either Cargo or Semantic MediaWiki storage code within the template called by that function (in addition to any regular display code). You can see an example of Cargo-based storage using #display_external_table here; it uses this template, and you can see the resulting data here.

If you do such storage, you should note a common problem, which is that the data stored by Cargo or SMW does not get automatically updated when the data coming from the external source changes. The best solution for this, assuming you expect the data to change over time, is to create a cron job to call either the Cargo maintenance script "cargoRecreateData.php" or the SMW maintenance script "rebuildData.php" at regular intervals, such as once a day; that way, the data is never more than a day old.