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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 [email protected] 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 [email protected] Room: D441 Dr. Gary Gangmin Li 4-17 CS30785 - Semistructured or Web-like databases...
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