Implement Table.replace for the database backend

[GregoryTravis]

Also implements Table.replace using a Map.

Checklist

Please ensure that the following checklist has been satisfied before submitting the PR:

• [ ] The documentation has been updated, if necessary.
• [ ] Screenshots/screencasts have been attached, if there are any visual changes. For interactive or animated visual changes, a screencast is preferred.
• [ ] All code follows the Scala, Java, and Rust style guides. In case you are using a language not listed above, follow the Rust style guide.
• All code has been tested:
  • [ ] Unit tests have been written where possible.
  • [ ] If GUI codebase was changed, the GUI was tested when built using ./run ide build.