Database

Databases are the core components of modern applications, responsible for storing, retrieving, and managing data. This section covers database concepts from fundamentals to advanced topics.

Topics

• Indexing - Index principles: B-Tree, Hash Index, composite indexes, optimization strategies
• Transactions - Transaction management: ACID properties, isolation levels, concurrency control, locking
• Advanced - Advanced topics: distributed databases, sharding, replication, CAP theorem
• Optimization - Performance optimization: query optimization, execution plan analysis, caching strategies
• Design Quality - Design quality assessment: normalization evaluation, performance metrics, data integrity, best practices checklist