DataAccess: introduction
A SimDAL DataAccess service allows to finally retrieve the data for a given dataset or the desired subset of it.
In this case, either:
(A)
- Just retrieve the VOTable with the full data.
or
(B)
- Discover the columns (and available ranges of values) that can be used to make a cutout.
- Use that info to retrieve only some desired columns and/or restrict the range of values of some columns.
