lecture21 - Semi-structured or Web-like Databases CS30785...

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Unformatted text preview: Semi-structured or Web-like Databases CS30785 Lecture 21 – ∆ Language Operations Dr. Gangmin Gary Li Department of CSSE XJTLU [email protected] Room: D441 Previous lecture • ∆ and ∆ * query language in general • ∆ syntax and semantics • ∆ and ∆ * different in • • Terms and formulas • Bounded quantifiers and computation terminatable (*) ∈ ∈ and * (*) ∈ ∈ ∈ or means L20 – ∆ Language Operations 2 CS30785 - Semistructured or Web-like databases Previous lecture • ∆ and ∆ * query language in general • ∆ syntax and semantics • ∆ and ∆ * different in • • Terms and formulas • Bounded quantifiers and computation terminatable (*) ∈ ∈ and * (*) ∈ ∈ ∈ or means L20 – ∆ Language Operations 2 CS30785 - Semistructured or Web-like databases Previous lecture • Operations in ∆ * • Singleton • Union • n-element set • ∆ *-separation L20 – ∆ Language Operations 3 CS30785 - Semistructured or Web-like databases Outline L20 – ∆ Language Operations 4 CS30785 - Semistructured or Web-like databases 5...
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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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lecture21 - Semi-structured or Web-like Databases CS30785...

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