本文探讨了数据库管理中的关键操作和技术，包括原子性操作、异步操作、数据规范化、自动索引和复杂数据操作抽象。通过具体实例阐述了如何确保数据一致性、提高查询效率，并提供了实现高效数据库管理的策略。
about DB:
- You need atomic operations.- your app can crash at any time and you don't have to worry about corrupt data)
- You need asynchronous operations.- multiple instances of your application can simultaneously modify the data without corrupting it/getting an invalid state.
- You need data normalization.- Products -m2m-> Catalogs
- Automatic Indexes- If you need fast searching capabilities (if your file system isn't already fast enough)
- You need abstraction of complex data operations.- i.e. SELECT SUM(Price) WHERE Price < 10 and the likes
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