intro - CS145 Introduction About CS145 Relational Model...

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1 CS145 Introduction About CS145 Relational Model, Schemas, SQL Semistructured Model, XML
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2 Content of CS145 Design of databases. E/R model, relational model, semistructured model, XML, UML, ODL. Database programming. SQL, XPath, XQuery, Relational algebra, Datalog. Not DBMS implementation (that’s CS245, 346, 347, sometimes CS345).
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3 Textbook “Situation” The closest text for the course is First Course in Database Systems/3 rd Edition . But it won’t be available until Friday. First 2 chapters available on-line. You may prefer Database Systems: Complete Book (also used in CS245) or have FCDB/2 nd E . If so, we’ll give you a free copy of the major additions in FCDB/3 rd E .
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4 Do You Know SQL? Explain the difference between: SELECT b FROM R WHERE a<10 OR a>=10; and SELECT b FROM R; a b 5 20 10 30 20 40 … … R
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5 And How About These? SELECT a FROM R, S WHERE R.b = S.b; SELECT a FROM R WHERE b IN (SELECT b FROM S);
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6 Course Requirements 1. Project : a little eBay supported by a database. Individual. Uses Stanford Oracle system. 2. Homeworks : Gradiance (automated) and “challenge problems” (written). 3. Midterm and final .
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7 Gradiance Homework System Automatic, fast-feedback system for taking you through standard homework problems and verifying your knowledge. Unusual : goal is to get 100% and learn. Homework in CS145 is not a “mini-test.” You try as many times as you like and get help with each wrong answer.
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8 Gradiance (GOAL) Access To get your account, you need: 1. “Value-Pak” with any of the class texts, or purchase on-line. 2. Class token: For FCDB/3e use 1B8B815E; for other books use A5DDE704. Details in the intro.html file. Advice on using Gradiance:
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9 Interesting Stuff About Databases It used to be about boring stuff: employee records, bank records, etc. Today, the field covers all the largest sources of data, with many new ideas. Web search. Data mining. Scientific and medical databases. Integrating information.
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10 More Interesting Stuff Database programming centers around limited programming languages.
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