Where does “superkey” come from?
superkey (English) comes from English super, from English super-ego, from German Über-Ich, from German Ich, from Middle High German ich, from Old High German ih, from Proto-West Germanic ik, from Proto-Germanic *ek — I.
superkey (English): Any set of attributes of a relation variable (relvar) that serve to identify a single tuple or row, no other tuple having the same value for every attribute in the set
Definitions
- Any set of attributes of a relation variable (relvar) that serve to identify a single tuple or row, no other tuple having the same value for every attribute in the set
Ancestry of “superkey”, step by step
superkey traces back through two separate lines of ancestry.
via English super
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | English | super | Of excellent quality, superfine; better than... |
| 2 | English | super-ego | Alternative spelling of superego |
| 3 | German | Über-Ich | superego |
| 4 | German | Ich | ego, the Ich; self, me, him, etc |
| 5 | Middle High German | ich | I |
| 6 | Old High German | ih | I |
| 7 | Proto-West Germanic | ik | I |
| 8 | Proto-Germanic | *ek | — |
| 9 | Proto-Indo-European | éǵh₂ | I |