Chapter 1
Database Fundamentals
Course: Comptia Datasys Ds0 001
Subject: Comptia Datasys Plus Ds0 001
Chapter: Database Fundamentals
When developers interact with databases through programming languages, especially using frameworks or ORMs, it can significantly influence the performance, scalability, and efficiency of database operations. Understanding how code translates into SQL queries—and how those queries interact with the underlying database engine—is crucial for maintaining optimal performance.
1. Object-Relational Mapping (ORM)
Object-Relational Mapping (ORM) is a programming technique used to bridge the gap between object-oriented programming languages and relational databases. ORMs allow developers to interact with databases using objects, classes, and methods rather than manually writing SQL queries.
The goal is to simplify data persistence by allowing developers to define models or entities that map to tables, with attributes mapping to columns and relationships representing foreign keys or joins.
Benefits of ORMs
1. Eliminates Boilerplate SQL Code
ORMs automatically generate SQL for common operations like SELECT, INSERT, UPDATE, and DELETE. This removes the need for repetitive SQL writing.