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There are situations where one uses a full featured abstraction like a database without needing to understand fully or modify it's internals. This is simply not one of them.

This is a situation where building a new applications with handmade layers that produce the outcome you want is more efficient than gluing together existing code.

You're coming at a complex problem by initially filtering the solution space. This discards much of the potential solution space for which the average case may be more expensive than The average case in the space after culling. However in many situations that solution space has many gems which are more efficient. Companies' tolerance to selecting those rather than using existing technology varies.