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所在平台: Udemy |
课程主页: https://www.udemy.com/course/mastering-sql-basics/
课程评论：没有评论
课程名称：掌握Oracle SQL：从基础到高级技术 课程概述：扩展你的SQL工具包。随着学习的深入，您将探讨高级查询技术，例如使用JOIN将多张表的数据结合，以及使用GROUP BY进行聚合函数，如计数、平均和求和数据。学习如何编写强大的SQL查询，以便深入洞察复杂的数据集。 在本课程中，您将： - 理解数据基础：深入了解数据和数据库的核心概念。学习数据是什么、数据库如何工作及其历史演变，从而奠定坚实的基础。 - 掌握SQL基础：发现SQL的历史和好处，并了解它如何与数据库交互。本部分覆盖了整个数据旅程中至关重要的SQL知识。 - 学习关键查询技术：获得SQL查询基础的实践经验。探索SELECT语句、用于过滤数据的WHERE子句和排序结果的ORDER BY。这些技能对于有效的数据检索和分析至关重要。 - 探索SQL数据类型和NULL值：了解不同的SQL数据类型，并学习如何在查询中处理NULL值，这是管理现实世界数据的重要方面。 - 获得数据库管理技能：了解如何使用SQL Developer下载、安装和设置Oracle数据库。理解用户和模式管理以及如何高效连接数据库。 - 理解子查询和嵌套查询：通过掌握子查询来提升您的SQL技能。学习如何编写高效的查询，引用其他查询，以便从数据库中提取更具体和有用的数据。 - 使用DML（数据操作语言）操纵数据：熟练掌握使用INSERT、UPDATE和DELETE命令插入、更新和删除数据。您将获得修改和维护数据库中数据的实践经验，这是数据分析师和数据库管理员的关键技能。 - 使用DDL（数据定义语言）控制访问：学习使用CREATE、ALTER和DROP命令创建和修改数据库结构。还将探索GRANT和REVOKE命令以管理用户权限，这对于维护数据库安全和完整性至关重要。 - 使用函数和表达式：发现如何使用内置SQL函数进行字符串操作、日期处理和数学运算。您还将学习像CASE这样的条件表达式，以及如何将这些工具整合到查询中以解决现实世界的数据挑战。 - 处理事务并维护数据完整性：学习如何使用COMMIT、ROLLBACK和SAVEPOINT管理数据库事务，以确保数据的一致性和完整性，尤其是在多用户环境中。这些概念对于处理复杂数据系统和确保数据的准确性和可靠性至关重要。 - 通过真实场景掌握SQL：在整个课程中，您将进行实践练习和真实项目，这些会模拟您在数据职业生涯中所面临的挑战。无论是构建报告、生成见解还是确保数据库安全，本课程都提供所需的实践经验，以在现实世界中应用SQL。 课程结束时，您将精通SQL，并能够自信地应对现实世界的数据挑战。无论您是追求数据分析、软件开发还是数据库管理的职业，这门课程将为您提供成功所需的工具。
Expand Your SQL Toolkit - As you progress, you'll delve into advanced query techniques such as using JOINS to combine data from multiple tables and GROUP BY to perform aggregate functions like counting, averaging, and summing data. Learn how to write powerful SQL queries that give you deeper insights into complex datasets.In this course, you will:Understand Data Fundamentals - Dive into the core concepts of data and databases. Learn what data is, how databases work, and their historical evolution to gain a solid foundation.Master SQL Basics - Discover the history and benefits of SQL, and understand how it operates to interact with databases. This section covers essential SQL knowledge that will be vital throughout your data journey.Learn Key Query Techniques - Get hands-on experience with the basics of SQL queries. Explore the SELECT statement, WHERE clause for filtering data, and ORDER BY for sorting results. These skills are crucial for effective data retrieval and analysis.Explore SQL Data Types and NULL Values - Understand different SQL data types and learn how to handle NULL values in your queries, an important aspect of managing real-world data.Gain Database Administration Skills - Learn to download, install, and set up Oracle Database using SQL Developer. Understand user and schema management, and how to connect to databases efficiently.Understand Subqueries and Nested Queries - Enhance your SQL skills by mastering subqueries. You'll learn how to write efficient queries that reference other queries, allowing you to extract more specific and useful data from your database.Manipulate Data with DML (Data Manipulation Language) - Get comfortable with inserting, updating, and deleting data using INSERT, UPDATE, and DELETE commands. You'll gain hands-on experience in modifying and maintaining data within databases, key skills for data analysts and database administrators alike.Control Access with DDL (Data Definition Language) - Learn how to create and modify database structures using CREATE, ALTER, and DROP commands. You'll also explore the GRANT and REVOKE commands to manage user permissions, a vital skill for maintaining database security and integrity.Work with Functions and Expressions - Discover how to use built-in SQL functions for string manipulation, date handling, and performing mathematical operations. You'll also learn about conditional expressions like CASE and how to integrate these tools into your queries to solve real-world data challenges.Handle Transactions and Maintain Data Integrity - Learn how to manage database transactions using COMMIT, ROLLBACK, and SAVEPOINT to ensure data consistency and integrity, especially in multi-user environments. These concepts are essential for working with complex data systems and ensuring your data is accurate and reliable.Master SQL with Real-World Scenarios - Throughout the course, you'll work on practical exercises and real-world projects that simulate the challenges you'll face in your data career. Whether it's building reports, generating insights, or ensuring database security, this course provides the hands-on experience needed to apply SQL in real-world situations.By the end of this course, you'll be proficient in SQL and ready to tackle real-world data challenges with confidence. Whether you're pursuing a career in data analytics, software development, or database administration, this course will give you the tools you need to succeed.
