GDG on Campus Benha National University - Obour, Egypt
1. Relational Databases (SQL): ◦ Definition: Structured Query Language for managing relational databases. ◦ Characterist...
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1. Relational Databases (SQL): ◦ Definition: Structured Query Language for managing relational databases. ◦ Characteristics: Schema, tables, rows, and columns. ◦ Advantages: Atomicity, Consistency, Isolation, Durability (ACID properties).
2. Non-Relational Databases (NoSQL): ◦ Definition: Designed for large volumes of unstructured data. ◦ Types: Document stores, key-value databases, graph databases, and column-family databases. ◦ Advantages: Scalability, flexibility, and efficient big data management.
3. Data Warehouses vs Data Lakes: ◦ Data Warehouse: Centralized repository for structured data. ◦ Data Lake: Repository for structured and unstructured data at scale.
4. OLAP vs OLTP: ◦ OLAP (Online Analytical Processing): For complex queries and historical data. ◦ OLTP (Online Transaction Processing): For real-time transactional data.
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