结构化查询语言Introduction to SQL (1).ppt,Introduction to SQL Part III COSC 3480 Teaching Plan Part SQL in 45 Minutes (Chapter 5) Relational Algebra (Chapter 4.2) More on SQL (Chapter 5) Example Instances We will use these instances of the Sailors and Re
SQL Introduction Standard language for querying and manipulating data Structured Query Language Many standards out there: ANSI SQL, SQL92. NULLs & Outer Joins Objectives of the Lecture : To consider the use of NULLs in SQL. To consider Outer Join Operations, and their implementation in SQL. IS ...
Simple SQL Query: Projection Lecture 2 > Section 2 > SFW Simple SQL Query: Projection PName Price Category Manufacturer Gizmo $19.99 Gadgets GizmoWorks Powergizmo $29.99 SingleTouch $149.99 Photography Canon MultiTouch $203.99 Household Hitachi Projection is the operation of producing an output table...
《数据库系统概念 Database System Concepts》原书教学资源(第七版,PPT课件讲稿,英文版)Chapter 3 Introduction to SQL,pptx格式文档下载,共60页。▪ Overview of The SQL Query Language ▪ SQL Data Definition ▪ Basic Query Structure of SQL Queries ▪
IntroductiontoSQL Select-From-WhereStatementsSubqueriesGroupingandAggregation Source:slidesbyJeffreyUllman 1 WhySQL?SQLisavery-high-levellanguage.Say“whattodo”ratherthan“howtodoit.”Avoidalotofdata-manipulationdetailsneededinprocedurallanguageslikeC++orJava.Databasemanagementsystemfiguresout“best”wayto...
Types of SQL Statements
The organization and topic selection of the llth edition is designed to:·Present an early introduction to SQL queries. ·Use a‘'spiral approach'’to database design. ·Use a consistent,generic Information Engineering(IE)Crow's Foot E-R diagram notation for data modehng and database design....
1 SharingKnowledgeandSuccess Oracleisarelationaldatabasemanagementsystem(RDBMS).RDBMSsallowusersto...putdatainkeep/managethedatagetdataoutandworkwithit DaleRoberts 2 SharingKnowledgeandSuccess •TheLanguageofOracle:SQL –StructuredQueryLanguage,Englishlikequerylanguage–keywords:select,from,where,andorderby–...
AnIntroductiontoDatabaseSystem 自主存取控制方法(续)4.2.4授权(Authorization)与回收在SQL中GRANT语句向用户授予权限,REVOKE语句收回授予的权限。一、GRANT语句的一般格式GRANT权限[,权限]…ON对象类型对象名[,对象对象名]…TO用户[,用户]…[WITHGRANTOPTION]AnIntroductiontoDatabaseSystem 建表(CREATETABLE)的权限:...
IntroductiontoOracle-SQL IntroductiontoOracle-SQL Additionalinformationisavailableinspeakernotes!1 Donortable Thedonortablecontains8fieldsorcolumns:IDNO,NAME,STADR,CITY,STATE,ZIP,DATEFST,YRGOALandCONTACT.Note:thenamesofthefields/columnsintheheaderbelowreferstoSTATEasSTsincethecolumnissmallandtheentirenamewillnot...