1Z0-171考試資料 - 1Z0-171考試大綱

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Oracle 1Z0-171 Exam Syllabus Topics:

SectionObjectives
Topic 1: Advanced SQL Features- Aggregations and grouping
  • 1. GROUP BY and HAVING
    • 2. Aggregate functions
      - Set operators and functions
      • 1. UNION, INTERSECT, MINUS
        • 2. Single-row and group functions
          Topic 2: Data Manipulation Language (DML)- Insert, Update, Delete operations
          • 1. Data integrity considerations
            • 2. Transaction control (COMMIT, ROLLBACK)
              Topic 3: Data Definition Language (DDL)- Schema objects
              • 1. Views and indexes
                • 2. Tables and constraints
                  Topic 4: Relational Database Concepts- Database fundamentals and relational model
                  • 1. Tables, rows, columns, and keys
                    • 2. Entity relationships and normalization basics
                      Topic 5: Retrieving Data Using SQL- SELECT statements
                      • 1. Sorting results with ORDER BY
                        • 2. Column selection and expressions
                          • 3. Filtering with WHERE clause
                            - Joins and Subqueries
                            • 1. Correlated and non-correlated subqueries
                              • 2. Inner and outer joins

                                >> 1Z0-171考試資料 <<

                                最新的1Z0-171認證考古題

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                                最新的 Oracle Database 1Z0-171 免費考試真題 (Q26-Q31):

                                問題 #26
                                What happens if a DELETE statement is executed without a WHERE clause?

                                答案：B


                                問題 #27
                                What will the following query return?
                                SELECT EXTRACT(YEAR FROM CURRENT_DATE) AS year FROM dual;

                                答案：C


                                問題 #28
                                What does the following SQL statement do?
                                CREATE TABLE employees (
                                employee_id NUMBER PRIMARY KEY,
                                first_name VARCHAR2(50),
                                hire_date DATE NOT NULL
                                );

                                答案：A


                                問題 #29
                                How can you ensure that data is sorted in descending order in a SQL query?

                                答案：D


                                問題 #30
                                What is the result of the following query?
                                SELECT employee_id
                                FROM employees
                                WHERE EXISTS (SELECT 1 FROM departments WHERE department_id = 10);

                                答案：C


                                問題 #31
                                ......

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