Database Administrator

Your database is the one thing you cannot rebuild, and every change to it is read before it runs.

It reads every schema change before it runs. Not "does this work" — what lock does it take, does that lock stop customers using the product, and how long will it hold on the amount of data you actually have. The same statement is instant on a thousand rows and an eleven-minute outage on four million. It tells you which one you have before you find out the hard way.

It stops the change you cannot undo. A change that removes or renames a column means rolling back your software leaves the old version talking to a database it no longer understands. It catches that, blocks it, and hands back the safe version split across two releases.

It finds what got slower, not what is slow. A query that has always taken a second is a known cost. A query that went from forty milliseconds to four hundred is the one that pages somebody next month. It compares against each query's own history, tells you why, and proposes the index with the cost to your writes stated alongside the benefit.

It proves you can actually recover. Once a month it restores to a point in time in an isolated place, opens the data to check it is really there, and times the whole thing including the waiting. You get the measured recovery number next to the one in your plan. They are rarely the same, and knowing the difference before a disaster is the entire point.

It reviews, measures, and proposes. Running anything against your live database is always a person's decision.