This content originally appeared on DEV Community and was authored by Rajon Dey
Relational Databases (SQL)
Relational databases are structured around tables, rows, and columns. Each table is a collection of related data entries, and each entry is organized as a row with specific columns. This structured approach makes it easy to manage and query data using SQL (Structured Query Language).
Example: Imagine a simple database for a bookstore:
Table: Books
SQL Query:
SELECT title, author FROM Books WHERE price < 10.00;
NoSQL Databases
NoSQL databases offer a more flexible approach, using documents, collections, and fields. This makes them ideal for unstructured or semi-structured data. NoSQL databases can store data in various formats, including JSON, making them highly adaptable to different types of data and use cases.
Example: Here’s a similar example using a document-based NoSQL database (like MongoDB):
Collection: Books
[
{
"id": 1,
"title": "The Great Gatsby",
"author": "F. Scott",
"price": 10.99
},
{
"id": 2,
"title": "1984",
"author": "George Orwell",
"price": 8.99
}
]
NoSQL Query (MongoDB):
db.Books.find({ price: { $lt: 10.00 } }, { title: "1, author: 1 });"
Popular Databases
Relational Databases:
- MySQL: Widely used for web applications and known for its speed and reliability.
- PostgreSQL: Praised for its advanced features and compliance with SQL standards.
- Oracle Database: A robust option for large enterprises with complex requirements.
- SQL Server: Integrates well with other Microsoft products and is popular in enterprise environments.
NoSQL Databases:
- MongoDB: A leading document-based database, great for handling JSON-like documents.
- Redis: A key-value store known for its speed and used for caching and real-time analytics.
- Apache Cassandra: A column-family store that's highly scalable, perfect for big data applications.
- Neo4j: A graph database that's ideal for data with complex relationships, like social networks.
This content originally appeared on DEV Community and was authored by Rajon Dey
Rajon Dey | Sciencx (2024-09-18T11:40:42+00:00) Relational Databases vs. NoSQL. Retrieved from https://www.scien.cx/2024/09/18/relational-databases-vs-nosql/
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