What is the purpose of the Rollback command?

Which of the following operators can be used to substitute the 'IN' operator in a SELECT statement?

Which of the following is(are) physical storage file(s) of Oracle?

Which of the following is not DML (Data Manipulation Language)?

True or False: "Select for Update" performs the function "Lock the record on result set."

The DBA assigns permission to the user using this command:

The Oracle server provides a number of standard data dictionary views to obtain information on database and instance. These views are:

Which one of these statements is true about a concatenated index?

When executing the command: "show parameter xxxx", ORA-00942: table or view does not exist appears. Which of the following best explains this error?

One of these datatypes is NOT a base scalar datatype?

Which of the following SQL functions can operate on any datatype?