Write SQL*Plus commands to do the following:
a) List all SQL*Plus commands;
b) Connect to the database 'OracleDB' with the user name 'CustomerOrders' and
password 'customer';
c) Use the COLUMN command to set the output format of the field 'StaffName' to
30 characters.
a) HELP index;
b) CONNECT CustomerOrders/customer@OracleDB;
c) COLUMN StaffName FORMAT A3;
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