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Oracle 1z0-071 Exam Syllabus Topics:

SectionObjectives
Subqueries and Advanced SQL- Correlated subqueries and nested queries
- Single-row and multi-row subqueries
Data Manipulation and Schema Objects- DML operations
  • 1. INSERT, UPDATE, DELETE, MERGE
    - DDL operations
    • 1. CREATE, ALTER, DROP tables and constraints
      SQL Retrieval- Joins and set operations
      • 1. INNER, OUTER, CROSS joins
        • 2. UNION, INTERSECT, MINUS
          - SELECT statements and filtering data
          • 1. WHERE clause and conditions
            • 2. ORDER BY and row limiting
              SQL Functions- Single-row functions
              • 1. Character, numeric, date functions
                - Conversion and conditional functions
                • 1. TO_CHAR, TO_NUMBER, CASE expressions
                  Relational Database Concepts- Tables, rows, columns, and relational model basics
                  - Data types and database objects overview

                  >> 1z0-071最新考證 <<

                  1z0-071指南，1z0-071資訊

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                  最新的 Oracle PL/SQL Developer Certified Associate 1z0-071 免費考試真題 (Q176-Q181):

                  問題 #176
                  You issued this command:

                  Which three statements are true?

                  答案：B,E,F


                  問題 #177
                  Examine this data in the EMPLOYERS table

                  Which statement will execute successfully?

                  答案：B


                  問題 #178
                  Which two statements are true about sequences created in a single instance Oracle database? (Choose two.)

                  答案：C,E

                  解題說明：
                  Explanation/Reference:
                  References:
                  http://docs.oracle.com/cd/E11882_01/server.112/e41084/statements_2012.htm#SQLRF00817
                  https://docs.oracle.com/cd/A84870_01/doc/server.816/a76989/ch26.htm


                  問題 #179
                  Examine the description of the EMPLOYEES table

                  You write this failing statement:
                  SELECT dept_no AS department_id, MAX (salary) As max_sal
                  FROM employees
                  WHERE salary >10000
                  GROUP BY department_id
                  ORDER BY max_sal;
                  Which clause causes the error?

                  答案：B

                  解題說明：
                  In the SQL statement provided, the error is caused by the GROUP BY clause. In Oracle SQL, when using GROUP BY, the expression in the GROUP BY clause must match exactly the expression in the SELECT list. The GROUP BY clause should reference the column name dept_no as mentioned in the SELECT list, not the alias department_id which is defined within the same SELECT statement.
                  The corrected SQL statement should be:
                  SELECT dept_no AS department_id, MAX(salary) As max_sal FROM employees WHERE salary > 10000 GROUP BY dept_no -- Changed from 'department_id' to 'dept_no' ORDER BY max_sal; References:
                  * Oracle Documentation on GROUP BY clause: GROUP BY Clause


                  問題 #180
                  Which three statements are true about GLOBAL TEMPORARY TABLES?

                  答案：B,E,F


                  問題 #181
                  ......

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