SQL command

Acctually basic for command in database is SQL. SQL = Structured Query Languaged.because i dont remember all the command, so i write in here. so sometimes i need i can see wherever in the world, with internet connection sure.ABORT — abort the current transactionALTER DATABASE — change a databaseALTER GROUP — add users to a group or remove users from a groupALTER TABLE — change the definition