SQL (Structured Query Language) is a domain-specific language used for managing and manipulating relational databases. It is commonly used for tasks such as querying data, updating data, inserting data, and deleting data in a database. Here are some basic SQL commands and concepts:SELECT Statement:Used to retrieve data from one or more tables.sql SELECT column1, column2, ... FROM table_name WHERE condition;INSERT Statement:Used to insert new records into a table.sql INSERT INTO table_name (co...