Word choice for hierarchical groups of data: data point → data set →?

A data point is a single unit of information.

A data set is a collection of data points (also known as a data series).

Is there a word for a collection of data sets?

I don't simply want to use "data sets" because of the context; it is important they look distinct at a glance.

• One word used in the RDBMS space is "catalog". Commented Sep 24, 2014 at 17:30
• What about a "data collection" or a "database"? But it seems like part of your trouble is in allowing two names "set" and "series" for the same thing. If you kept "series" as a collection of points, then "set" can be a collection of "series"
– Jim
Commented Sep 24, 2014 at 17:40
• "data" is the plural of "datum", which means a single unit of information. Thus, data is a collection of datums, and a data set is a collection of collections of datums. Commented Sep 24, 2014 at 19:20
• Relational databases would build as follows: field, record, table, database. Commented Jun 4, 2020 at 4:51

Superset is often used to refer to a set of sets, see http://en.wiktionary.org/wiki/superset.

• Mathematically speaking, a superset is not a set of sets. A superset is a set that contains all the elements of another set. E.g. A = {1,2,3,4} is a subset of B = {1,2,3,4,5}. B is a superset of A, although it is still just a regular set. Commented Sep 24, 2014 at 19:22
• Agreed, I was thinking more about body building. Commented Sep 24, 2014 at 20:57
• the true context of the question is charting software Commented Sep 24, 2014 at 21:28

It can also be referred to as a family of sets

http://en.wikipedia.org/wiki/Family_of_sets

In software, especially when dealing with taxonomy relations, you will often use the word `parent`. So you would talk about parent sets and child sets with points existing in the children.