lecture4 - 4-8 Collection Expression Dr. Gary Gangmin Li...

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Semi-structured or Web-like Databases CS30785 Lecture 4 – Term Expressions Dr. Gangmin Gary Li Department of CSSE XJTLU Gangmin.li@xjtlu.edu.cn Room: D441 Dr. Gary Gangmin Li 4-1 CS30785 - Semistructured or Web-like databases
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Outlines • Terms and Formulas in Set Theory • Important Logical Notations • Collection Expression • Examples • SQL mappings • Graph, Set BibDB and Query Answers Dr. Gary Gangmin Li CS30785 - Semistructured or Web-like databases 4-2
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4-3 Dr. Gary Gangmin Li CS30785 - Semistructured or Web-like databases
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4-4 Terms and Formulas • Terms is a short form of “term expression”. Term Expression is an expression with different operators, variables and values. Algebra expression, Arithmetic expression Set expression (collection expression) Condition expression (Boolean expression) Dr. Gary Gangmin Li CS30785 - Semistructured or Web-like databases
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4-5 Collection Expression Dr. Gary Gangmin Li CS30785 - Semistructured or Web-like databases
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4-6 Collection Expression Dr. Gary Gangmin Li CS30785 - Semistructured or Web-like databases
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4-7 Collection Expression Dr. Gary Gangmin Li CS30785 - Semistructured or Web-like databases
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Unformatted text preview: 4-8 Collection Expression Dr. Gary Gangmin Li CS30785 - Semistructured or Web-like databases 4-9 Collection Expression Dr. Gary Gangmin Li CS30785 - Semistructured or Web-like databases 4-10 Collection Expression Dr. Gary Gangmin Li CS30785 - Semistructured or Web-like databases 4-11 Collection Expression Dr. Gary Gangmin Li CS30785 - Semistructured or Web-like databases 4-12 Dr. Gary Gangmin Li CS30785 - Semistructured or Web-like databases 4-13 Dr. Gary Gangmin Li CS30785 - Semistructured or Web-like databases 4-14 Dr. Gary Gangmin Li CS30785 - Semistructured or Web-like databases 4-12 4-12 4-15 Dr. Gary Gangmin Li CS30785 - Semistructured or Web-like databases 4-13 4-13 4-16 UoL slides old http://www.csc.liv.ac.uk/~sazonov/ comp311/comp311-08.html Homework to me at the end of the Friday Dr. Gary Gangmin Li CS30785 - Semistructured or Web-like databases Semi-structured or Web-like Databases CS30785 Lecture 4 Term Expressions Dr. Gangmin Gary Li Department of CSSE XJTLU Gangmin.li@xjtlu.edu.cn Room: D441 Dr. Gary Gangmin Li 4-17 CS30785 - Semistructured or Web-like databases...
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This note was uploaded on 05/22/2011 for the course CS 30785 taught by Professor Garyli during the Spring '11 term at University of Liverpool.

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lecture4 - 4-8 Collection Expression Dr. Gary Gangmin Li...

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