3. Which of the following is the syntax for creating an Index?
3. Which of the following is the syntax for creating an Index?
1. CREATE [UNIQUE] INDEX index_name OF tbl_name (index_columns)
2. CREATE [UNIQUE] INDEX OF tbl_name (index_columns)
3. CREATE [UNIQUE] INDEX ON tbl_name (index_columns)
4. CREATE [UNIQUE] INDEX index_name ON tbl_name (index_columns)