About SQL
SQL (Structured Query Language) is a standard language for managing and querying data in relational database management systems (RDBMS).
It's the foundation of many modern databases, used in everything from web applications to data warehouses.
Common Faqs
Here are some frequently asked questions:
- What is SQL? SQL is a language for managing and retrieving data from relational databases.
- How do I write a query? You use SQL commands to specify what data you need.
- What is a JOIN? A JOIN combines rows from two or more tables based on a common column.
- How do I handle errors? Use try, catch and finally blocks.
- What is ACID? ACID stands for Atomicity, Consistency, Isolation, and Durability. They ensure data integrity.
- How do I select data? Use the SELECT statement to get specific data.
- How to create a table? Use CREATE TABLE statement.