[Subtask] Add RelationalTable

### Describe the subtask

Here's the list of sub-tasks we should implement for completing `RelationalTable.java`.

- [x] #8614
- [x] #8806
- [x] #8795
- [x] #8626
- [x] #8796
- [x] #8797
- [x] #8625
- [x] #8758
- [x] #9386
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#### SupportsPolicies

- [ ] #8608
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#### SupportsPartitionStatistics

- [ ] #8612
- [ ] #8613
- [ ] #8624

### Parent issue

#5198

### Role issue

Start with RelationalTable.java and the parent issue #5198, then review the remaining subtasks #8608, #8612, #8613, and #8624. Completion means implementing the outstanding SupportsPolicies and SupportsPartitionStatistics work and checking off the listed subtasks.

Written by the indexing model from the issue text.