10-midterm-review

10-midterm-review - Multiplicity, weak entity sets, ISA...

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1 Midterm Review CPS 116 Introduction to Database Systems Announcements (Tue. Oct. 4) ± Homework #1 graded ± Homework #2 due today ² Sample solution available tomorrow (Wed.) ± Midterm exam in class Thursday ² Open book, open notes ² Additional copies of sample midterm + solution (from 2009) available today ± Project milestone #1 due next Thursday ² See course website for description handout 2 Topics covered so far ± Relational model + declarative query language ² Physical data independence ± Relational algebra: ߪ ,×, ⋈ ,⋈,ߩ , −,∪,∩ ² Monotonicity ± Entity-relationship design
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Unformatted text preview: Multiplicity, weak entity sets, ISA relationships Design theory (FDs , MVDs , BCNF, 4NF) Help eliminate redundancy Key, the whole key, nothing but the key Attribute closure, chase SQL NULL and three-value logic nifty feature, big mess Bag versus set semantics SFW (or SPJ) queries, subqueries, grouping and aggregation Modifications Constraints the more you know the better you can do Recursion: fixed-point iteration; stratified recursion OLTP vs. OLAP 3...
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This document was uploaded on 01/17/2012.

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