INTG-3363 - Fixed column length and added indexes.

[sc-gv]

Summary

This PR fixes the column length for 3 fields and adds indexes as they were missing.

Problem description

Pros/cons of approach implemented

Checklist

• Is this PR a reasonable size?

• List deployment sequence with all relevant PRs.
  • ...

---

Code Review Guidelines for Reviewers

• Try to review in a timely manner. Opinions/nitpicks should not be blockers. Pair on a call for non-trivial feedback.
• Overall design and approach should follow established patterns. Don't try to make the PR perfect.
• Try to identify edge cases, race conditions, over-engineering, lack of test coverage and complexity.
• If you don't feel qualified to review the code, pass it on to someone who is.