OCA - SQL

None, because no input required

Both the substitution variables ''hiredate' and 'mgr_id'.

Only hiredate'

Only 'mgr_id'

DELETE orders o, order_items I WHERE o.order_id = i.order_id;

DELETE FROM orders WHERE (SELECT order_id FROM order_items);

DELETE orders WHERE order_total < 1000;

DELETE order_id FROM orders WHERE order_total < 1000;

SELECT NVL (TO CHAR(cust_credit_limit * .15), 'Not Available') "NEW CREDIT" FROM customers;

SELECT TO_CHAR (NVL(cust_credit_limit * .15), 'Not Available') "NEW CREDIT" FROM customers;

SELECT NVL(cust_credit_limit * .15), 'Not Available') "NEW CREDIT" FROM customers;

SELECT NVL(cust_credit_limit), 'Not Available') "NEW CREDIT" FROM customers;

It generates an error because multiple columns (SALARY, COMMISSION) cannot be specified together in an UPDATE statement.

It generates an error because a subquery cannot have a join condition in a UPDATE statement.

It executes successfully and gives the desired update

It executes successfully but does not give the desired update

Performance would improve in query 2 only if there are null values in the CUST_CREDIT_LIMIT column.

There would be no change in performance.

Performance would degrade in query 2.

Performance would improve in query 2.

It would not execute because the same column has been used in both sides of the AND logical operator to form the condition.

It would not execute because the entire WHERE clause condition is not enclosed within the parentheses.

It would execute and the output would display the desired result.

It would execute but the output would return no rows.

SELECT name, concat (address| | ','| |city| |', ', country) AS full_address, start_date, property_price, property_price*115/100 FROM stores WHERE MONTHS_BETWEEN (start_date, '01-JAN-2000')

SELECT name, concat (address| | ','| |city| |', ', country) AS full_address, start_date, property_price, property_price*115/100 FROM stores WHERE TO_NUMBER(start_date-TO_DATE('01-JAN-2000','DD-MON-RRRR'))

SELECT name, address||','||city||','||country AS full_address, start_date, property_price, property_price*115/100 FROM stores WHERE MONTHS_BETWEEN (start_date, TO_DATE('01-JAN-2000','DD-MON-RRRR'))

SELECT name, concat (address||','| |city| |', ', country) AS full_address, start_date, property_price, property_price*115/100 FROM stores WHERE MONTHS_BETWEEN (start_date, TO_DATE('01-JAN-2000','DD-MON-RRRR'))

The execution fails unless the numeral 3 in the ORDER BY clause is replaced by a column name.

Rows are displayed in the order that they are stored in the table only for the three rows with the lowest values in the key column.

Rows are displayed in the order that they are stored in the table only for the first three rows.

Rows are displayed sorted in ascending order of the values in the third column in the table.

When the BOOKS table is dropped, the BOOK_TRANSACTIONS table is dropped.

When the BOOKS table is dropped, all the rows in the BOOK_TRANSACTIONS table are deleted but the table structure is retained.

When a row in the BOOKS table is deleted, the rows in the BOOK_TRANSACTIONS table whose BOOK_ID matches that of the deleted row in the BOOKS table are also deleted.

When a value in the BOOKS.BOOK_ID column is deleted, the corresponding value is updated in the BOOKS_TRANSACTIONS.BOOK_ID column.

SELECT m.last_name "Manager", e.last_name "Employee" FROM employees m JOIN employees e ON m.employee_id = e.manager_id WHERE m.manager_id = 100;

SELECT m.last_name "Manager", e.last_name "Employee" FROM employees m JOIN employees e ON m.employee_id = e.manager_id WHERE e.manager_id = 100;

SELECT m.last_name "Manager", e.last_name "Employee" FROM employees m JOIN employees e ON e.employee_id = m.manager_id WHERE m.manager_id = 100;

SELECT m.last_name "Manager", e.last_name "Employee" FROM employees m JOIN employees e WHERE m.employee_id = e.manager_id and AND e.manager_id = 100

SELECT e.last_name, m.manager_id FROM employees e RIGHT OUTER JOIN employees m on (e.manager_id = m.employee_id) AND e.employee_id = 123;

SELECT e.last_name, m.manager_id FROM employees e RIGHT OUTER JOIN employees m on (e.employee_id = m.manager_id) WHERE e.employee_id = 123;

SELECT e.last_name, e.manager_id FROM employees e RIGHT OUTER JOIN employees m on (e.employee_id = m.employee_id) WHERE e.employee_id = 123;

SELECT m.last_name, e.manager_id FROM employees e LEFT OUTER JOIN employees m on (e.manager_id = m.manager_id) WHERE e.employee_id = 123;

Second normal form

First normal form

Third normal form

Fourth normal form

INTERSECT

UNION

PLUS

MINUS

SUBTRACT

After executing the ALTER TABLE command, you can add a new column called ORDER_DATE to the ORDERS table.

The ORDER_DATE column should be empty for the ALTER TABLE command to execute succsessfully.

ROLLBACK can be used to get back the ORDER_DATE column in the ORDERS table.

The DESCRIBE command would still display the ORDER_DATE column.

It would remain disabled and can be enabled only by dropping the foreign key constraint and recreating it.

It would remain disabled and has to be enabled manually using the ALTER TABLE command.

It would be automatically enabled and immediate.

It would be automatically enabled and deferred.

In a character sort, the values are case-sensitive.

NULL values are not considered at all by the sort operation.

Only those columns that are specified in the SELECT list can be used in the ORDER BY clause.

Numeric values are displayed from the maximum to the minimum value if they have decimal positions.

Adding a column constraint when inserting a row into a table

Adding a column with a default value when inserting a row into a table

Removing all data only from one single column on which a unique constraint is defined

Removing all data only from one single column on which a primary key constraint is defined

SELECT member_id AS MEMBER_ID, due_date AS DUE_DATE, $2 AS LATE_FEE FROM BOOKS_TRANSACTIONS;

SELECT member_id 'MEMBER ID', due_date 'DUE DATE', '$2 AS LATE FEE' FROM BOOKS_TRANSACTIONS;

SELECT member_id AS "MEMBER ID", due_date AS "DUE DATE", '$2' AS "LATE FEE" FROM BOOKS_TRANSACTIONS;

SELECT member_id AS "MEMBER ID", due_date AS "DUE DATE", $2 AS "LATE FEE" FROM BOOKS_TRANSACTIONS;

The ORDERS_MASTER table would contain the ORDER_IDs 1, 2, 3 and 4.

The ORDERS_MASTER table would contain the ORDER_IDs 1, 2 and 4.

The ORDERS_MASTER table would contain the ORDER_IDs 1, 2 and 3.

The ORDERS_MASTER table would contain the ORDER_IDs 1 and 2.

Use Quote (q) operator and delimiter to allow the use of single quotation mark in the literal character string.

Enclose the literal character string in the SELECT clause within the double quotation marks.

Do not enclose the character literal string in the SELECT clause within the single quotation marks.

Use escape character to negate the single quotation mark inside the literal character string in the SELECT clause.

ALTER TABLE orders MODIFY CONSTRAINT orders_cust_id_nn NOT NULL (customer_id);

ALTER TABLE orders ADD CONSTRAINT orders_cust_id_nn NOT NULL (customer_id);

ALTER TABLE orders MODIFY customer_id CONSTRAINT orders_cust_nn NOT NULL (customer_id);

ALTER TABLE orders ADD customer_id NUMBER(6)CONSTRAINT orders_cust_id_nn NOT NULL;

SELECT COUNT (DISTINCT list_price) FROM product_information WHERE list_price is NULL

SELECT COUNT (NVL(list_price, 0)) FROM product_information WHERE list_price is NULL

SELECT COUNT (list_price) FROM product_information WHERE list_price i= NULL

SELECT COUNT (list_price) FROM product_information WHERE list_price is NULL

PUBLIC should be replaced with specific usernames.

ALL should be replaced with a list of specific privileges.

WITH GRANT OPTION should be added to the statement.

Separate GRANT statements are required for ORDERS and ORDER_ITEMS tables.

In generates an error because rrrr should be replaced by rr in the format string.

It executes successfully but does not return the correct result.

It executes successfully and returns the correct result.

In generates an error because TO_CHAR should be replaced with TO_DATE.

In generates an error because fm and double quotation marks should not be used in the format string.

SELECT d.department_id, c.course_id FROM department_details d RIGHT OUTER JOIN course_details c ON (d.department_id=c. department_id);

SELECT d.department_id, c.course_id FROM department_details d LEFT OUTER JOIN course_details c ON (d.department_id=c. department_id);

SELECT d.department_id, c.course_id FROM course_details c LEFT OUTER JOIN department_details d ON (c.department_id=d. department_id);

SELECT d.department_id, c.course_id FROM department_details d RIGHT OUTER JOIN course_details c ON (c.department_id=d. department_id);

The table prefix is missing for the column names in the SELECT clause.

The NATURAL JOIN clause is missing the USING clause.

The DEPARTMENTS table is not used before the EMPLOYEES table in the FROM clause.

The EMPLOYEES and DEPARTMENTS tables have more than one column with the same column name and data type.

A set of Data Manipulation Language (DML) statements executed in a sequence ending with a SAVEPOINT forms a single transaction.

Each Data Definition Language (DDL) statement executed forms a single transaction.

A set of DDL statements executed in a sequence ending with a COMMIT forms a single transaction.

A combination of DDL and DML statements executed in a sequence ending with a COMMIT forms a single transaction.

It recovers only the table structure.

It recovers the table structure, data, and the indexes.

It recovers the table structure and data but not the related indexes.

It is not possible to recover the table structure, data, or the related indexes.

2, 1, 4, 3

4, 1, 2, 3

4, 2, 1, 3

2, 4, 1, 3

150

200

160

16

100

SELECT SUBSTR (cust_name, INSTR (cust_name, ' ')+1) FROM customers WHERE SUBSTR (cust_name, INSTR (cust_name, ' ')+1) LIKE INITCAP ('MC%');

SELECT SUBSTR (cust_name, INSTR (cust_name, ' ')+1) FROM customers WHERE INITCAP (SUBSTR(cust_name, INSTR (cust_name, ' ')+1)) = 'Mc';

SELECT SUBSTR (cust_name, INSTR (cust_name, ' ')+1) FROM customers WHERE INITCAP (SUBSTR(cust_name, INSTR (cust_name, ' ')+1)) LIKE 'Mc%';

SELECT SUBSTR (cust_name, INSTR (cust_name, ' ')+1) FROM customers WHERE INITCAP (SUBSTR(cust_name, INSTR (cust_name, ' ')+1)) = INITCAP 'MC%';

The NEW_SALES table would get created and all the NOT NULL constraints defined on the specified columns would be passed to the new table.

The NEW_SALES table would not get created because the DEFAULT value cannot be specified in the column definition.

The NEW_SALES table would not get created because the column names in the CREATE TABLE command and the SELECT clause do not match.

The NEW_SALES table would get created and all the FOREIGN KEY constraints defined on the specified columns would be passed to the new table.

It displays prod IDs in the promo with the lowest cost.

It displays prod IDs in the promos with the lowest cost in the same time interval.

T displays prod IDs in the promos with the highest cost in the same time interval.

It displays prod IDs in the promos which cost less than the highest cost in the same time interval.

UPDATE dept d SET city = ALL (SELECT city FROM locations l WHERE d.location_id = l.location_id);

UPDATE dept d SET city = (SELECT city FROM locations l) WHERE d.location_id = l.location_id;

UPDATE dept d SET city = ANY (SELECT city FROM locations l)

UPDATE dept d SET city = (SELECT city FROM locations l WHERE d.location_id = l.location_id);