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Examine the create table statements for the stores and sales tables. SQL> CREATE TABLE stores(store_id NUMBER(4) CONSTRAINT store_id_pk PRIMARY KEY, store_name VARCHAR2(12), store_address VARCHAR2(20), start_date
SQL> CREATE TABLE sales(sales_id NUMBER(4) CONSTRAINT sales_id_pk PRIMARY KEY, item_id NUMBER(4), quantity NUMBER(10), sales_date DATE, store_id NUMBER(4), CONSTRAINT store_id_fk FOREIGN KEY(store_id)
You executed the following statement:
SQL> DELETE from stores
The statement fails due to the integrity constraint error:
ORA-02292: integrity constraint (HR.STORE_ID_FK) violated
Which three options ensure that the statement will execute successfully?
A. Disable the primary key in the STORES table.
B. Use CASCADE keyword with DELETE statement.
C. DELETE the rows with STORE_ID = 900 from the SALES table and then delete rows from STORES table.
D. Disable the FOREIGN KEY in SALES table and then delete the rows.
E. Create the foreign key in the SALES table on SALES_ID column with on DELETE CASCADE option.
Correct Answer: CDE
In which normal form is a table, if it has no multi-valued attributes and no partial dependencies?
A. second normal form
B. first normal form
C. third normal form
D. fourth normal form
Correct Answer: A
Examine the structure of the MEMBERS table. NameNull?Type
MEMBER_IDNOT NULLVARCHAR2 (6)
LAST_NAMENOT NULLVARCHAR2 (50)
STATENOT NULL VARCHAR2 (3)
Which query can be used to display the last names and city names only for members from the states MO and MI?
A. SELECT last_name, city FROM members WHERE state =\’MO\’ AND state =\’MI\’;
B. SELECT last_name, city FROM members WHERE state LIKE \’M%\’;
C. SELECT last_name, city FROM members WHERE state IN (\’MO\’, \’MI\’);
D. SELECT DISTINCT last_name, city FROM members WHERE state =\’MO\’ OR state =\’MI\’;
Correct Answer: C
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
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View the Exhibit and examine the details of the PRODUCT_INFORMATION table.
You have the requirement to display PRODUCT_NAME and LIST_PRICE from the table where the CATEGORYJD column has values 12 or 13, and the SUPPLIER_ID column has the value 102088. You executed the following SQL
SELECT product_name, list_price
WHERE (category_id = 12 AND category_id = 13) AND supplier_id = 102088;
Which statement is true regarding the execution of the query?
A. It would execute but the output would return no rows.
B. It would execute and the output would display the desired result.
C. It would not execute because the entire WHERE clause condition is not enclosed within the parentheses.
D. It would not execute because the same column has been used in both sides of the AND logical operator to form the condition.
Correct Answer: A
View the Exhibit and examine the structure of the EMP table which is not partitioned and not an index-organized table. (Choose two.)
Evaluate this SQL statement:
ALTER TABLE emp
DROP COLUMN first_name;
Which two statements are true?
A. The FIRST_NAME column can be dropped even if it is part of a composite PRIMARY KEY provided the CASCADE option is added to the SQL statement.
B. The FIRST_NAME column would be dropped provided at least one column remains in the table.
C. The FIRST_NAME column would be dropped provided it does not contain any data.
D. The drop of the FIRST_NAME column can be rolled back provided the SET UNUSED option is added to the SQL statement.
Correct Answer: B
View the exhibit and examine the structure of the CUSTOMERS table.
Which two tasks would require subqueries or joins to be executed in a single statement?
A. finding the number of customers, in each city, whose credit limit is more than the average credit limit of all the customers
B. finding the average credit limit of male customers residing in \’Tokyo\’ or \’Sydney\’
C. listing of customers who do not have a credit limit and were born before 1980
D. finding the number of customers, in each city, who\’s marital status is \’married\’.
E. listing of those customers, whose credit limit is the same as the credit limit of customers residing in the city \’Tokyo\’.
Correct Answer: AE
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
Examine these SQL statements that are executed in the given order:
CREATE TABLE emp
(emp_no NUMBER (2) CONSTRAINT emp_emp_no_pk PRIMARY KEY,
ename VARCHAR 2 (15),
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 will be the status of the foreign key EMP_MGR_FK?
A. It will be enabled and immediate.
B. It will be enabled and deferred.
C. It will remain disabled and can be re-enabled manually.
D. It will remain disabled and can be enabled only by dropping the foreign key constraint and re-creating it.
Correct Answer: C
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