{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is the purpose of db.preset in Opera?","a":"In Opera, db.preset is a tool for pre-setting database operations, allowing users to quickly pre-set and apply a set of database operations in Opera's developer  tools. This simplifies the development process and improves work efficiency. By using db.preset, developers can pre-set database operations such as SQL queries, insertions, updates, and deletions, and apply these pre-set operations with a single click when needed. This enables developers to avoid manually writing database operation code each time, saving time and effort."}]}],"pr":"e7d941dd3cc6932ae232ef6eb01a90a45b83728d25388f02c8a82695243a2260"}