I am rather confused by the hurt-mongering here.
I know how to do them, see below, but no idea why? What are they for?
create table orders (
InnoDB:
The InnoDB storage engine in MySQL. InnoDB is a high-reliability and high-performance storage engine for MySQL. Key advantages of InnoDB include:
InnoDB Limitations:
No full text indexing (Below-5.6 mysql version)
Cannot be compressed for fast, read-only
More Details:
Refer this link