MySQL commands, optimization, and Docker setup. Docker Setup Docker Run 1# Run MySQL 2docker run -d \ 3 --name mysql \ 4 -e MYSQL_ROOT_PASSWORD=rootpassword \ 5 -e MYSQL_DATABASE=mydb \ 6 -e MYSQL_USER=myuser \ 7 -e MYSQL_PASSWORD=password \ 8 -v mysql-data:/var/lib/mysql \ 9 -p 3306:3306 \ 10 mysql:8 11 12# Connect …

PostgreSQL advanced features including procedures, views, pgvector for vector similarity search, and Docker setup. Docker Setup Docker Run 1# Run PostgreSQL 2docker run -d \ 3 --name postgres \ 4 -e POSTGRES_PASSWORD=password \ 5 -e POSTGRES_USER=myuser \ 6 -e POSTGRES_DB=mydb \ 7 -v …

SQL language fundamentals - essential commands and patterns for relational databases. Data Definition Language (DDL) CREATE TABLE 1-- Basic table 2CREATE TABLE users ( 3 id SERIAL PRIMARY KEY, 4 username VARCHAR(50) UNIQUE NOT NULL, 5 email VARCHAR(100) UNIQUE NOT NULL, 6 created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP …

Comprehensive comparison of SQL and NoSQL databases to help choose the right database for your use case. Decision Tree Feature Comparison Feature SQL NoSQL Schema Fixed, predefined Flexible, dynamic Scalability Vertical (scale up) Horizontal (scale out) Transactions ACID guaranteed Eventually consistent (usually) Joins …

SQLite commands for embedded database applications. Basic Commands 1# Create/open database 2sqlite3 mydb.db 3 4# Open in-memory database 5sqlite3 :memory: 6 7# Execute SQL file 8sqlite3 mydb.db < schema.sql 9 10# Dump database 11sqlite3 mydb.db .dump > backup.sql 12 13# Export to CSV 14sqlite3 -header -csv …