COMP9311 DATABASE SYSTEMS • Xuemin L in • Schoo l o f Compu te r Sc ience and Eng inee r i ng • Off i ce : K17 -503 • E-ma i l : l xue@cse .unsw.edu .au • Ex t : 6493 • h t tp : / /www.cse .unsw.edu .au /~ l […]
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— Q1 create or replace view AllRatings(taster,beer,brewer,rating) as select t.given,b.name,br.name,r.score from Taster t, Beer b, Brewer br, Ratings r where r.taster = t.id and r.beer = b.id and b.brewer = br.id order by t.given, r.score desc; ; — Q2 create or replace view JohnsFavouriteBeer(brewer,beer) as select brewer,beer from AllRatings where taster = ‘John’ and rating
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Physical Database Design * Overview 1 * Overview: Database Design Data models: ER, Relational Data Model and their mapping Relational Algebra: be able to use relational algebra to answer question. Database Languages: SQL, PLpgSQL (final exam: You can read and understand SQL code and convert it to Relational Algebra Expression) Relational Database Design: Functional Dependency,
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Name: , (Family name) Student ID: (Given name) THE UNIVERSITY OF NEW SOUTH WALES Final Exam COMP9318 Data Warehousing and Data Mining SESSION 1, 2008 • Time allowed: 10 minutes reading time + 3 hours • Total number of questions: 7 + 1 • Total number of marks: 100 + 5 (Bonus) • Only UNSW
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