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所在平台: Udemy |
课程主页: https://www.udemy.com/course/oracle-sql-by-manjunath-jituri/
课程评论:没有评论
课程名称:Oracle SQL 课程概述: 本课程旨在介绍SQL这一强大且广泛应用的数据处理语言。如今,互联网上的动态网站(如在线银行、社交媒体、铁路订票和电子商务)均依赖于数据库,而SQL在其中扮演着重要角色。几乎所有的科技巨头(如Uber、Netflix等)在日常运营中都使用SQL,甚至像Facebook、Google和Amazon等公司,虽然拥有自己的高性能数据库系统和数据团队,仍然依靠SQL进行查询和分析。对于数据分析师、数据科学家和数据工程师等职位而言,掌握SQL是非常重要的。 课程学习内容: 1. SQL基础入门以及基本选择语句 2. 数据的限制与排序 3. 使用DDL命令进行表的创建、修改、删除、重命名和截断 4. 通过DML命令访问数据库表(插入、更新、删除) 5. 在列上创建约束,以避免不必要的数据输入,并维护表间的父子关系 6. 单行函数和多行函数 7. 使用连接从多个表中获取数据 8. 使用子查询和集合运算符组合来自多个查询的数据 9. 使用其他模式对象 10. 创建全局临时表GTT 11. 使用LISTAGG函数 12. 授予/撤销系统和对象权限,创建角色,为角色授予权限及将角色分配给用户 此外,课程还包含数百个示例,设计专业,内容组织良好,深入探讨各个主题(所有主题均详尽解说),以及终身的作者支持。
We all know that , SQL is more powerful and widely used language for data work.All the dynamic websites existing on the internet are database driven. Dynamic sites like online banking, social media sites, railway reservation, e-commerceare connected to database. If database is there then SQL will definitely come into the picture.Almost all of the biggest names in tech use SQL. Uber, Netflix - the list goes on. Even within the companies like Facebook, Google, Amazon , which have builttheir own high performance database systems and data teams use SQL to query and perform analysis.You might be knowing that , SQL is most demanding for Data Analyst role, Data Scientist and Data Engineer role.What are you going to learn from this course? SQL Introduction And Basic Select StatementsRestricting And Sorting DataCreating/Altering/Dropping/Renaming/Truncating Tables Using DDL CommandsAccessing Database Tables by Insert/Update/Delete DML CommandsCreating Constraints On Column To Avoid Unwanted Entry Of Data Into Table And To Maintain Parent-Child Relationship Between The TablesSingle Row Functions And Multi Row FunctionsFetching Data From Multiple Tables Using JoinsUsing SubqueriesUsing Set Operators To Combine Data From Multiple QueriesUsing Other Schema ObjectsCreating GTT - Global Temporary TablesUsing LISTAGG FunctionGrant/Revoke of System And Object privileges Creating Roles , Granting Privileges To Roles And Granting Roles to UsersMore?Hundreds of ExamplesProfessional Course Design,Well-organized ContentIn-Depth Subjects (All subjects are explained with all details)Lifetime Author Support.