DBMS
作者：Infant Antony Shelton
1. Security
2. Architecture
2.1. Centralized
2.2. Decentralized
2.3. Hierarchical
3. Database Engine
3.1. Log Structured (LSM Storage engine)
3.1.1. Append only
3.1.2. Maintains old data even when some crash occurs
3.1.3. Compaction - removing redundant values and merging two or more segments into a single one
3.1.4. In memory hash map to store the location where the data starts (byte offset)