Why doesn't NexusDb do some pre-processing on Table Filters?

NexusDB, just like e.g. BDE with Paradox tables, and a lot of other DBMS,implements TnxTable as a direct cursor into the data.
Filters are evaluated on a record by record basis. This is "as designed". Some other DBMS that don't support the concept of navigational table access simulate it by having a "table" component that internally executes queries.

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