MCQOPTIONS
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MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Structured Query Language (SQL) knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Issuing ‘SELECT’ on a MERGE table is like _____________ |
| A. | UNION |
| B. | UNION ALL |
| C. | UNION DISTINCT |
| D. | JOIN |
| Answer» C. UNION DISTINCT | |
| 2. |
To combine multiple retrievals, which keyword is used to write several SELECT statements between them? |
| A. | COMBINE |
| B. | CONCAT |
| C. | JOIN |
| D. | UNION |
| Answer» E. | |
| 3. |
Which of these operators does not perform relative value comparisons? |
| A. | = |
| B. | == |
| C. | <= |
| D. | >= |
| Answer» C. <= | |
| 4. |
Which of these is not optional? |
| A. | select_list |
| B. | table_list |
| C. | row_constraint |
| D. | grouping_columnsView Answer |
| Answer» B. table_list | |
| 5. |
WHICH_OF_THESE_OPERATORS_DOES_NOT_PERFORM_RELATIVE_VALUE_COMPARISONS??$ |
| A. | = |
| B. | == |
| C. | <= |
| D. | >= |
| Answer» E. | |
| 6. |
To_combine_multiple_retrievals,_which_keyword_is_used_to_write_several_SELECT_statements_between_them?$ |
| A. | COMBINE |
| B. | CONCAT |
| C. | JOIN |
| D. | UNION |
| Answer» C. JOIN | |
| 7. |
What is the facility that allows nesting one select statement into another? |
| A. | nesting |
| B. | binding |
| C. | subquerying |
| D. | encapsulating |
| Answer» C. subquerying | |
| 8. |
Which is the join in which all the rows from the right table appear in the output irrespective of the content of the other table? |
| A. | CARTESIAN JOIN |
| B. | CROSS JOIN |
| C. | INNER JOIN |
| D. | RIGHT JOIN |
| Answer» D. RIGHT JOIN | |
| 9. |
The default path to perl in Unix is ______________ |
| A. | /usr/bin/perl |
| B. | /usr/bin |
| C. | /usr/perl |
| D. | /usr/perl/bin |
| Answer» B. /usr/bin | |
| 10. |
The Perl DBI is ______________ |
| A. | database inheritance |
| B. | database integrity |
| C. | database interface |
| D. | database isolation |
| Answer» D. database isolation | |
| 11. |
The shebang line is ______________ |
| A. | ! |
| B. | ! |
| C. | $ |
| D. | $ |
| Answer» B. ! | |
| 12. |
Perl scripts are text files. |
| A. | True |
| B. | False |
| Answer» B. False | |