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Which three statements are true regarding the data types?
A. The minimum column width that can be specified for a VARCHAR2 data type column is one.
B. Only one LONG column can be used per table.
C. A TIMESTAMP data type column stores only time values with fractional seconds.
D. The BLOB data type column is used to store binary data in an operating system file.
E. The value for a CHAR data type column is blank-padded to the maximum defined column width.
Correct Answer: ABE
View the Exhibit and examine the data in the PRODUCTS table. (Choose the best answer.)
You must display product names from the PRODUCTS table that belong to the \’Software/other\’ category with minimum prices as either $2000 or $4000 and with no unit of measure.
You issue this query:
SQL > SELECT prod_name, prod_category, prod_min_price FROM products
Where prod_category LIKE \’%Other%\’ AND (prod_min_price = 2000 OR prod_min_price = 4000) AND prod_unit_of_measure \’ \’;
Which statement is true?
A. It executes successfully but returns no result.
B. It executes successfully and returns the required result.
C. It generates an error because the condition specified for PROD_UNIT_OF_MEASURE is not valid.
D. It generates an error because the condition specified for the PROD_CATEGORY column is not valid.
Correct Answer: A
Which three statements are true reading subquenes?
A. A Main query can have many subqueries.
B. A subquery can have more than one main query.
C. The subquery and main query must retrieve date from the same table.
D. The subquery and main query can retrieve data from different tables.
E. Only one column or expression can be compared between the subquery and main query.
F. Multiple columns or expressions can be compared between the subquery and main query.
Correct Answer: ADF
Which two tasks can be performed by using Oracle SQL statements?
A. changing the password for an existing database user
B. connecting to a database instance
C. querying data from tables across databases
D. starting up a database instance
E. executing operating system (OS) commands in a session
Correct Answer: AC
View the exhibit and examine the structures of the EMPLOYEES and DEPARTMENTS tables. EMPLOYEES NameNull?Type
DEPARTMENT_IDNOT NULLNUMBER(4) DEPARTMENT_NAMENOT NULLVARCHAR2(30)
You want to update EMPLOYEES table as follows:
You issue the following command:
SQL> UPDATE employees
SET department_id =
WHERE location_id = 2100),
(salary, commission) =
(SELECT 1.1*AVG(salary), 1.5*AVG(commission)
FROM employees, departments
WHERE departments.location_id IN(2900, 2700, 2100))
WHERE department_id IN
WHERE location_id = 2900
OR location_id = 2700;
What is outcome?
A. It generates an error because multiple columns (SALARY, COMMISSION) cannot be specified together in an UPDATE statement.
B. It generates an error because a subquery cannot have a join condition in a UPDATE statement.
C. It executes successfully and gives the desired update
D. It executes successfully but does not give the desired update
Correct Answer: D
Evaluate the following SQL statements that are issued in the given order:
CREATE TABLE emp
(emp_no NUMBER(2) CONSTRAINT emp_emp_no_pk PRIMARY KEY,
salary NUMBER (8,2),
mgr_no NUMBER(2) CONSTRAINT emp_mgr_fk REFERENCES emp(emp_no));
ALTER TABLE emp
DISABLE CONSTRAINT emp_emp_no_pk CASCADE;
ALTER TABLE emp
ENABLE CONSTRAINT emp_emp_no_pk;
What would be the status of the foreign key EMP_MGR_PK?
A. It would remain disabled and can be enabled only by dropping the foreign key constraint and recreating it.
B. It would remain disabled and has to be enabled manually using the ALTER TABLE command.
C. It would be automatically enabled and immediate.
D. It would be automatically enabled and deferred.
Correct Answer: B
Which two statements are true regarding the SQL GROUP BY clause?
A. You can use a column alias in the GROUP BY clause.
B. Using the WHERE clause after the GROUP BY clause excludes rows after creating groups.
C. The GROUP BY clause is mandatory if you are using an aggregating function in the SELECT clause.
D. Using the WHERE clause before the GROUP BY clause excludes rows before creating groups.
E. If the SELECT clause has an aggregating function, then columns without an aggregating function in the SELECT clause should be included in the GROUP BY clause.
Correct Answer: DE
The user SCOTT who is the owner of ORDERS and ORDER_ITEMS tables issues the following GRANT command:
ON orders, order_items
What correction needs to be done to the above statement?
A. PUBLIC should be replaced with specific usernames.
B. ALL should be replaced with a list of specific privileges.
C. WITH GRANT OPTION should be added to the statement.
D. Separate GRANT statements are required for ORDERS and ORDER_ITEMS tables.
Correct Answer: D
Evaluate the following CRTEATE TABLE commands:
(ord_no NUMBER (2) CONSTRAINT ord_pk PRIMARY KEY,
cust_id NUMBER (4) );
CREATE TABLE ord_items
(ord _no NUMBER (2),
item_no NUMBER(3), qty NUMBER (3) CHECK (qty BETWEEEN 100 AND 200),
expiry_date date CHECK (expiry_date> SYSDATE),
CONSTRAINT it_pk PRIMARY KEY (ord_no, item_no),
CONSTARAINT ord_fk FOREIGN KEY (ord_no) REFERENCES orders (ord_no) );
Why would the ORD_ITEMS table not get created?
A. SYSDATE cannot be used with the CHECK constraint.
B. The BETWEEN clause cannot be used for the CHECK constraint.
C. The CHECK constraint cannot be placed on columns having the DATE data type.
D. ORD_NO and ITEM_NO cannot be used as a composite primary key because ORD_NO is also the FOREIGN KEY.
Correct Answer: A
Evaluate the following SELECT statement and view the exhibit to examine its output: SELECT constraint_name, constraint_type, search_condition, r_constraint_name, delete_rule, status, FROM user_constraints WHERE table_name = \’ORDERS\’; CONSTRAINT_NAME CON SEARCH_CONDITION R_CONSTRAINT_NAME DELETE_RULE STATUS ORDER_DATE_NN C “ORDER_DATE” IS NOT NULL ENABLED
ORDER_CUSTOMER_ID_NN C “CUSTOMER_ID” IS NOT NULL ENABLED ORDER_MODE_LOV C order _mode in (\’direct\’, \’online\’) ENABLED ORDER TOTAL MIN
order total >= 0 ENABLED ORDER PK P ENABLED ORDERS CUSTOMER ID R CUSTOMERS ID SET NULL ENABLED ORDERS SALES REP R EMP EMP ID SET NULL ENABLED Which two statements are true about the output? (Choose two.)
A. The R_CONSTRAINT_NAME column gives the alternative name for the constraint.
B. In the second column, \’c\’ indicates a check constraint.
C. The STATUS column indicates whether the table is currently in use.
D. The column DELETE_RULE decides the state of the related rows in the child table when the corresponding row is deleted from the parent table.
Correct Answer: BD
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