Oracle Database: SQL Fundamentals I 1Z0-051

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3. Which statement is true regarding the default behavior of the ORDER BY clause?

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

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

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

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

Answer: A

4. Examine the structure and data in the PRICE_LIST table:

Name Null? Type

————– ——– —————-

PROD_ID NOT NULL NUMBER(3)

PROD_PRICE VARCHAR2(10)

PROD_ID PROD_PRICE

——- ———-

100 $234.55

101 $6,509.75

102 $1,234

You plan to give a discount of 25% on the product price and need to display the discount amount in the same format as the PROD_PRICE.

Which SQL statement would give the required result?

A.SELECT TO_CHAR(prod_price* .25,’$99,999.99′) FROM PRICE_LIST;

B.SELECT TO_CHAR(TO_NUMBER(prod_price)* .25,’$99,999.00′) FROM PRICE_LIST;

C.SELECT TO_CHAR(TO_NUMBER(prod_price,’$99,999.99′)* .25,’$99,999.00′) FROM PRICE_LIST;

D.SELECT TO_NUMBER(TO_NUMBER(prod_price,’$99,999.99′)* .25,’$99,999.00′) FROM PRICE_LIST;

Answer: C

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2. SLS is a private synonym for the SH.SALES table.

The user SH issues the following command:

DROP SYNONYM sls;

Which statement is true regarding the above SQL statement?

A.Only the synonym would be dropped.

B.The synonym would be dropped and the corresponding table would become invalid.

C.The synonym would be dropped and the packages referring to the synonym would be dropped.

D.The synonym would be dropped and any PUBLIC synonym with the same name becomes invalid.

Answer: A

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1. Evaluate the following CREATE TABLE commands:

CREATE TABLE orders

(ord_no NUMBER(2) CONSTRAINT ord_pk PRIMARY KEY,

ord_date DATE,

cust_id NUMBER(4));

CREATE TABLE ord_items

(ord_no NUMBER(2),

item_no NUMBER(3),

qty NUMBER(3) CHECK (qty BETWEEN 100 AND 200),

expiry_date date CHECK (expiry_date > SYSDATE),

CONSTRAINT it_pk PRIMARY KEY (ord_no,item_no),

CONSTRAINT ord_fk FOREIGN KEY(ord_no) REFERENCES orders(ord_no));

The above command fails when executed. What could be the reason?

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.

Answer: A

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107. View the Exhibit and examine the data in the PROMOTIONS tabl.You need to display all promo categories that do not have ‘discount’ in their subcategory.

Which two SQL statements give the required result? (Choose two.)

A.SELECT promo_category

FROM promotions

MINUS

SELECT promo_category

FROM promotions

WHERE promo_subcategory = ‘discount’;

B.SELECT promo_category

FROM promotions

INTERSECT

SELECT promo_category

FROM promotions

WHERE promo_subcategory = ‘discount’;

C.SELECT promo_category

FROM promotions

MINUS

SELECT promo_category

FROM promotions

WHERE promo_subcategory <> ‘discount’;

D.SELECT promo_category

FROM promotions

INTERSECT

SELECT promo_category

FROM promotions

WHERE promo_subcategory <> ‘discount’;

Answer: AD