Where does “itemset” come from?

I can't write this sentence because the etymology chain provided contains only English at every stage with no actual origin information, and the meaning is listed as unknown. Without a genuine chain showing language progression or a known meaning to explain sense development, I cannot create an accurate origin summary. Could you provide the actual etymology chain (for example, showing earlier languages like Old English, Proto-Germanic, etc.) and/or the known meaning of "itemset"?

itemset (English): A group of related items

Definitions

  1. A group of related items

Ancestry of “itemset”, step by step

itemset traces back through two separate lines of ancestry.

via English set

StepLanguageWordMeaning
1EnglishsetTo put down, to rest; To attach or affix to...
2EnglishseptA clan, tribe, or family, proceeding from a...
3EnglishsectAn offshoot of a larger religion; a group sharing...
4Middle EnglishsecteA variety or sort; a category with a...
5Old Frenchsectea sect in philosophy or religion
6Late Latinsectaa sect in philosophy or religion, a school,...
7Latinsequipresent active infinitive of sequor; follow, come...
8LatinsequorI follow, come or go after
9Proto-Italicsekʷōrfollow, come/go after
10Proto-Indo-Europeansékʷetorto be following
11Proto-Indo-Europeansekʷ-to follow; to see; to say

via English item

StepLanguageWordMeaning
1EnglishitemA distinct physical object; An object that can be...
2Middle Englishitemalso, and this; the same; identical
3Latinitemjust like

Words derived from “itemset

Every word from Proto-Indo-European sekʷ-