Examine this statement:
On which two columns of the table will an index be created automatically? (Choose two.)
Examine this statement:
On which two columns of the table will an index be created automatically? (Choose two.)
An index will be created automatically on columns defined with UNIQUE and PRIMARY KEY constraints. In this table, the ORDER_ID column is defined as PRIMARY KEY and SERIAL_NO column is defined as UNIQUE. Therefore, indexes will be created automatically on these two columns.
UNIQUE and PRIMARY key constraints will have unique index created automatically