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NEW QUESTION 43
Which three statements are true about external tables?

  • A. DML statements can modify them.
  • B. They can be temporary tables.
  • C. They can be used In queries containing sorts.
  • D. Their metadata Is stored In the database.
  • E. They can be indexed.
  • F. They can be used in queries containing Joins.

Answer: C,D,F

 

NEW QUESTION 44
You must create a SALES table with these column specifications and data types:
SALESID: Number
STOREID: Number
ITEMID: Number
QTY: Number, should be set to 1 when no value is specified
SLSDATE: Date, should be set to current date when no value is specified PAYMENT: Characters up to 30 characters, should be set to CASH when no value is specified Which statement would create the table? (Choose the best answer.)

  • A. CREATE TABLE sales(salesid NUMBER(4),storeid NUMBER(4),itemid NUMBER(4),qty NUMBER DEFAULT 1,slsdate DATE DEFAULT ‘SYSDATE’,payment VARCHAR2(30) DEFAULT CASH);
  • B. CREATE TABLE sales(salesid NUMBER(4),storeid NUMBER(4),itemid NUMBER(4),qty NUMBER DEFAULT 1,slsdate DATE DEFAULT SYSDATE,payment VARCHAR2(30) DEFAULT ‘CASH’);
  • C. CREATE TABLE sales(salesid NUMBER(4),storeid NUMBER(4),itemid NUMBER(4),qty NUMBER DEFAULT = 1,slsdate DATE DEFAULT SYSDATE,payment VARCHAR2(30) DEFAULT =
    “CASH”);
  • D. CREATE TABLE sales(salesid NUMBER(4),storeid NUMBER(4),itemid NUMBER(4),qty NUMBER DEFAULT = 1,slsdate DATE DEFAULT SYSDATE,payment VARCHAR2(30) DEFAULT =
    “CASH”);

Answer: B

 

NEW QUESTION 45
View the exhibit and examine the ORDERStable.

The ORDERStable contains data and all orders have been assigned a customer ID. Which statement would add a NOTNULLconstraint to the CUSTOMER_IDcolumn?
ALTER TABLE orders

  • A. ADD CONSTRAINT orders_cust_id_nn NOT NULL (customer_id);
    ALTER TABLE orders
  • B. MODIFY CONSTRAINT orders_cust_id_nn NOT NULL (customer_id);
    ALTER TABLE orders
  • C. ADD customer_id NUMBER(6)CONSTRAINT orders_cust_id_nn NOT NULL;
  • D. MODIFY customer_id CONSTRAINT orders_cust_nn NOT NULL (customer_id);
    ALTER TABLE orders

Answer: D

 

NEW QUESTION 46
The INVOICE table has a QTY_SOLD column of data type NUMBER and an INVOICE_DATE column of data type DATE NLS_DATE_FORMAT is set to DD-MON-RR.
Which two are true about data type conversions involving these columns in query expressions?

  • A. CONCAT(qty_sold, invoice_date): requires explicit conversion
  • B. invoice_date = ’15-march-2019′: uses implicit conversion
  • C. qty_sold =’05549821 ‘: requires explicit conversion
  • D. qty_sold BETWEEN ‘101’ AND ‘110’: uses implicit conversion
  • E. invoice_date> ’01-02-2019′: uses implicit conversion

Answer: B,D

 

NEW QUESTION 47
Examine this data in the EMPLOYEES table:

Which statement will execute successfully?
SELECT dept_id, INSTR(last_name, ‘A’), SUM(salary) FROM employees GROUP BY

  • A. dept_id;
  • B. SELECT dept_id, LENGTH(last_name), SUM(salary) FROM employees GROUP BY
  • C. dept_id;
    SELECT dept_id, STDDEV(last_name), SUM(salary) FROM employees GROUP BY
  • D. dept_id;
    SELECT dept_id, MAX(last_name), SUM(salary) FROM employees GROUP BY dept_id;

Answer: B

Explanation:
Explanation/Reference:

 

NEW QUESTION 48
……

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