《数据库原理及应用》(Introduction to Database Systems) 一、关系代数(共15分,每小题3分) 设有供应商-零件-工程数据库模式如下: 供应商表S(sNo,sName, sCity, sTel) 零件表P(pNo, pName, pColor, pOrigin) 工程项目表J(jNo, jName, jCity) 供应情况表SPJ(sNo, jNo, pNo, Qty) 给出得到如下结果的关系代数表达式:…
FIT5195 Major Assignment2020-Semester1 FIT5195 Major Assignment – Sem 1/2020 (Weight = 25%) Due date: Week 11, Friday 5-Jun-2020, Week 12, Wednesday, 10-Jun-2020, 11:55pm A. General…
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University of Toronto csc343, Winter 2020 Assignment 2 Due: Friday, March 6, before 4pm Learning Goals By the end of this assignment you will be…