1Z0-071 FREE EXAM DUMPS & PASSING 1Z0-071 SCORE

1z0-071 Free Exam Dumps & Passing 1z0-071 Score

1z0-071 Free Exam Dumps & Passing 1z0-071 Score

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Oracle 1z1-071 exam is designed to evaluate the candidate's knowledge and skills in the area of Oracle Database SQL. 1z0-071 Exam is intended for individuals who wish to pursue a career as an Oracle Database Developer or Administrator. The Oracle 1z1-071 exam is a certification exam that is globally recognized and highly valued in the IT industry.

Oracle Database SQL Sample Questions (Q71-Q76):

NEW QUESTION # 71
Which three statements are true regarding group functions? (Choose three.)

  • A. They can be used with a SQL statement that has a GROUP BY clause.
  • B. They can be used only on one column in the SELECT clause.
  • C. They can be used together with the single-row functions in the SELECT clause.
  • D. They can be used on columns or expressions.
  • E. They can be passed as an argument to another group function.

Answer: C,D,E

Explanation:
References:
https://www.safaribooksonline.com/library/view/mastering-oracle-sql/0596006322/ch04.html


NEW QUESTION # 72
Examine the BRICKS table:

You write this query:
SELECT
FROM bricks b1 CROSS JOIN bricks b2
WHERE b1. Weight < b2. Weight:
How many rows will the query return?

  • A. 0
  • B. 1
  • C. 2
  • D. 3
  • E. 4
  • F. 5

Answer: E

Explanation:
A: Incorrect because the CROSS JOIN of the BRICKS table with itself will produce more than one row.
B: Incorrect because CROSS JOINing a table with four rows with itself produces 16 rows, but the WHERE condition filters these down.
C: Incorrect because while a CROSS JOIN of a table with four rows with itself produces 16 rows, this answer does not take into account the WHERE condition.
D: Correct. The CROSS JOIN will result in 16 combinations (4x4), but the WHERE condition b1.weight < b2.weight will only be true for combinations where the second weight is greater than the first. Since there are 4 distinct weights, there are (42)=6(24)=6 combinations where one weight is less than the other.
E: Incorrect because this does not account for the conditions specified in the WHERE clause.
F: Incorrect because the query will return some rows due to the condition specified.


NEW QUESTION # 73
Examine this partial command:

Which two clauses are required for this command to execute successfully?

  • A. the REJECT LIMIT clause
  • B. the LOCATION clause
  • C. the ACCESS PARAMETERS clause
  • D. the DEFAULT DIRECTORY clause
  • E. the access driver TYPE clause

Answer: B,D


NEW QUESTION # 74
Which three statements are true about single row functions?

  • A. The date type returned can be different from the data type of the argument.
  • B. They can be used only in the where clause of a select statement.
  • C. They return a single result row per table.
  • D. The argument can be a column name, variable, literal or an expression.
  • E. They can accept only one argument.
  • F. They can be nested to any level.

Answer: A,D,F

Explanation:
Single-row functions in SQL operate on each row independently and can modify the returned value:
* Option A: Incorrect. Single row functions can be used in multiple parts of a SELECT statement, including SELECT, WHERE, and ORDER BY clauses.
* Option B: Incorrect. Single row functions can accept more than one argument, such as the CONCAT function, which can accept multiple string arguments.
* Option C: Incorrect. They return one result for each row processed, not per table.
* Option D: Correct. Single row functions can take various types of arguments including column names, literals, variables, and other expressions.
* Option E: Correct. Functions can be nested within other functions, allowing complex expressions and calculations.
* Option F: Correct. The data type of the result can differ from the arguments' data types, such as the SUBSTR function returning a VARCHAR2 even when used on a number after converting it to a string.


NEW QUESTION # 75
Examine the data in the CUST_NAME column of the CUSTOMERS table:

You want to display the CUST_NAME values where the last name starts with Mc or MC.
Which two WHERE clauses give the required result?

  • A. WHERE INITCAP (SUBSTR (cust_name, INSTR(cust_name, '')+1)) LIKE 'Mc%'
  • B. WHERE INITCAP (SUBSTR (cust_name, INSTR(cust_name, '')+1)) IN ('MC%', 'Mc%)
  • C. WHERE UPPER (SUBSTR (cust_name, INSTR(cust_name, '')+1)) LIKE UPPER ('MC%')
  • D. WHERE SUBSTR (cust_name, INSTR (cust_name, '') +1) LIKE 'Mc%'
  • E. WHERE SUBSTR (cust_name, INSTR (cust_name, '') +1) LIKE 'Mc%' OR 'MC%'

Answer: D


NEW QUESTION # 76
......

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