In database system development using Java, a common performance bottleneck is the "sequential registration of data." When handling large volumes of data ranging from thousands to tens of thousands of ...

The questions provided in this repository are the summary of frequently asked questions across numerous companies. We cannot guarantee that these questions will actually be asked during your interview ...

You check `EXPLAIN` during code review and find no slow queries, yet in production, hundreds of SQL statements are being executed. This is the N+1 problem. Even if your index design is correct, ...

After running a query, if an error occurs, the Explain and Fix button appears below the error message in the Results panel. Click it to open AI Chat with an ...