This task is about creating the table structure the software will use to know who to notify about a comment when it is posted.
=== Background
//For additional context, see T260372's `===Background` and `===Details` sections.//
=== Table structure
|Variable|Value
|---|---|
|Size of the table (number of rows expected)|
|Expected growth per year (number of rows)|
|Expected writes to the table (per minute, per hour //or// per day)|
| Expected amount of reads |
| Can this table be public or private?|
| The release plan for the feature (are there specific wikis you'd like to test first etc) |
=== Done
- [ ] Tag `DBA` once the `===Table structure` above has been defined, per the guidance @Marostegui shared in T260372#6482475
- [ ] The rows in the `Values` column above have been defined
- [ ] Table is created