What databases have you worked with?

In working with Golang, I used different databases:

• Relational DBMS: PostgreSQL, MySQL. Used them for storing structured data with ORM (e.g., GORM) and raw SQL queries.
• NoSQL: MongoDB for document storage and flexible schema.
• In-memory databases: Redis for caching and fast data operations.

Example of connecting to PostgreSQL using the standard library database/sql:

import (
    "database/sql"
    _ "github.com/lib/pq"
)

func connect() (*sql.DB, error) {
    connStr := "user=postgres dbname=mydb sslmode=disable"
    return sql.Open("postgres", connStr)
}