我见过每天凌晨四点的洛杉矶。

The database is the most important piece of software in the enterprise, and the most important piece of software in the enterprise is the database. The database is the foundation of all applications. The database is the heart of the application, and the application is the heart of the business. The key to performance is to keep the hot data in memory.

检验统计假设的问题由来已久，其起源已不可考。

价格是你付出的，而价值才是你得到的。