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所在平台: Udemy |
课程主页: https://www.udemy.com/course/practical-exam-oracle-database-1z0-071/
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**Coursera 课程总结:Oracle Database SQL 1Z0-071 实战考试准备** 本课程旨在帮助学员高效、轻松地准备 Oracle Database SQL 1Z0-071 认证考试。课程提供一套模拟练习题,但强调这些题目并非官方考题,而是覆盖了考试大纲中的所有关键内容。 **核心目标:** * **快速掌握知识:** 通过大量练习,巩固 SQL 语言和 Oracle 数据库的各项知识点。 * **定期检测:** 每套测试包含 40 道题目,鼓励学员定期进行练习,以便及时发现和弥补知识盲点。 * **熟悉考试形式:** 题目的设计旨在模拟真实考试中的知识考察方式,帮助学员熟悉考试流程。 **课程内容涵盖:** 1. **关系型数据库基础:** 涵盖理论和物理层面概念,以及数据库与 SQL 的关系。 2. **SQL SELECT 语句:** * 检索数据,使用连接子句(Linking clauses)与 ERD 模型组件关联。 * 使用列别名、连接操作符、字面量字符串、替代引号操作符和 DISTINCT 关键字。 * 在 SELECT 和 WHERE 子句中使用算术表达式、NULL 值,并理解优先级规则。 * 限制返回的行数和排序数据。 * 使用替换变量、DEFINE 和 VERIFY 命令。 3. **单行函数:** * 处理和操作字符串(字符函数)、数字(ROUND, TRUNC, MOD)和日期。 * 进行日期运算,使用日期函数。 * 利用转换函数(TO_CHAR, TO_NUMBER, TO_DATE)和条件表达式。 * 应用 NVL, NULLIF, COALESCE 函数处理 NULL 值。 * 理解隐式和显式数据类型转换。 * 实现函数嵌套。 4. **聚合函数与分组:** * 使用聚合函数报告汇总数据。 * 创建和限制分组结果。 5. **多表查询:** * 显示来自多个表的数据。 * 使用自连接、不同类型的连接(包括非等值连接)和外连接。 * 理解和使用笛卡尔积。 6. **子查询:** * 使用单行和多行子查询解决复杂查询。 * 处理依赖子查询的 UPDATE 和 DELETE 操作。 7. **集合运算符:** * 匹配 SELECT 语句。 * 在集合操作中使用 ORDER BY 子句。 * 使用 INTERSECT、MINUS、UNION 和 UNION ALL 运算符。 8. **DML 语句与事务管理:** * 执行 INSERT, UPDATE, DELETE 操作。 * 执行多表插入和 MERGE 语句。 * 管理数据库事务,控制事务。 9. **对象和结构管理:** * 管理索引、同义词和序列。 * 使用 DDL 管理表及其关系,包括表的创建、删除列、设置未使用列、清空表。 * 创建和使用临时表及外部表。 * 管理约束和视图。 10. **用户访问控制:** * 区分系统和对象权限。 * 授予表权限。 * 区分授予权限和角色。 11. **数据字典视图:** * 使用数据字典视图管理对象。 12. **时区与日期/时间:** * 处理不同时区的数据。 * 使用 CURRENT_DATE, CURRENT_TIMESTAMP, LOCALTIMESTAMP。 * 使用 INTERVAL 数据类型。 **重要提示:** * 本课程提供的练习题仅为辅助学习材料,**并非官方考试题目**。 * 学员应将本课程作为**补充学习资源**,而非唯一备考资料。 * 课程中的所有问题和答案均使用**英文**,与实际考试语言一致。 本课程的实战练习方法旨在帮助学员在短时间内有效地巩固知识,建立信心,顺利通过 Oracle Database SQL 1Z0-071 考试。
"Note: The following questions are NOT official questions that you will find in the official exam. These questions COVER all the content described in the categories listed below. This material is designed to prepare you for the Oracle 1Z0-071 exam.To prepare you as best as possible for the exam, the answers are shuffled each time you take a test:)I want you to prepare for the exam as quickly and easily as possible, so each test consists of 40 questions. This approach is meant to encourage you to regularly take tests and check your knowledge.On the bus? Take one test. Waiting in the waiting room? Take another!40 questions won't take much of your time, and regularly testing your knowledge will ensure you pass 1Z0-071 without any problems!NOTE: This course should not be the only study material preparing you for the official exam. These tests are meant to allow you to check your knowledge so that you can feel comfortable approaching the real exam. All questions and answers in the tests are in English, just like in the exam.What is covered in the practical tests:- Concepts of relational databases- Explanation of theoretical and physical aspects of relational databases- Linking clauses in SQL SELECT statement with components of the ERD model- Explanation of the relationship between a database and SQL- Retrieving data using SQL SELECT statement- Using column aliases- Using SQL SELECT statement- Using concatenation operator, literal strings, alternative quotation operator, and DISTINCT keyword- Using arithmetic expressions and NULL values in SQL SELECT statement- Limiting and sorting data- Applying operator precedence rules in an expression- Limiting the number of rows returned in SQL statement- Using substitution variables- Using DEFINE and VERIFY commands- Sorting data- Using single-row functions to manipulate results- Manipulating strings with character functions in SQL SELECT and WHERE clauses- Performing arithmetic operations on date data- Manipulating numbers with ROUND, TRUNC, and MOD functions- Manipulating dates with date functions- Using conversion functions and conditional expressions- Applying NVL, NULLIF, and COALESCE functions to data- Understanding implicit and explicit data type conversions- Using TO_CHAR, TO_NUMBER, and TO_DATE conversion functions- Nesting multiple functions- Reporting aggregated data using grouping functions- Limiting grouping results- Creating data groups- Using grouping functions- Displaying data from multiple tables- Using self-joins- Using different types of joins- Using non-equijoins- Using outer joins- Understanding and using Cartesian products- Using subqueries to solve queries- Using single-row subqueries- Using multi-row subqueries- Updating and deleting rows with dependent subqueries- Using SET operators- Matching SELECT statements- Using ORDER BY clause in set operations- Using INTERSECT operator- Using MINUS operator- Using UNION and UNION ALL operators- Managing tables with DML statements- Managing transactions in a database- Controlling transactions- Performing insert, update, and delete operations- Performing multi-table inserts- Performing Merge statement- Managing indexes, synonyms, and sequences- Managing indexes- Managing synonyms- Managing sequences- Using DDL to manage tables and their relationships- Describing and working with tables- Describing and working with columns and data types- Creating tables- Removing columns and setting unused columns- Clearing tables- Creating and using temporary tables- Creating and using external tables- Managing constraints- Managing views- Managing views- Controlling user access- Distinguishing between system and object privileges- Granting table privileges- Differentiating between granting privileges and roles- Managing objects using data dictionary views- Using data dictionary views- Managing data in different time zones- Working with CURRENT_DATE, CURRENT_TIMESTAMP, and LOCALTIMESTAMP- Working with INTERVAL data typesThese practical tests will help you efficiently prepare for the Oracle Database SQL 1Z0-071 exam!"