csce824-lecture11

csce824-lecture11 - Review of Distributed Databases...

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Review of Distributed Databases
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Students presentations CSCE 824 - Farkas 2
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Textbook Reading Chapter 1: Introduction Chapter 2: Background on Relational DBMS Also, lecture materials from CSCE 520 Chapter 3: Distributed Database Design – top-down approach Main concepts, approaches, advantages, disadvantages Farkas CSCE 824 - Spring 2011 3
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Summary cont. Chapter 4: Database Integration – bottom-up approach Understand main concepts, difficulties, and supporting technologies Chapter 5: Security Concepts Also, lecture notes from CSCE 522 Chapter 10: Transaction Management Main concepts, ACID properties, (no 10.3) Farkas CSCE 824 - Spring 2011 4
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Summary cont. Chapter 11: Concurrency control 2PL, lock types, deadlock management (no specifics about TO alg.) Chapter 12: reliability 2PC, site and communication failures, window of uncertainty Chapter 13: replicated databases Goals, issues, types of replica control alg. , advantages, disadvantages Farkas CSCE 824 - Spring 2011 5
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Test 1 – Question Type 1. Relate concepts to current technologies Chapter 3: fragmentation, allocation: how do these concepts relate to grid or service oriented computing; what are the security issues related to these concepts? Chapter 4: data integration: what are the current trends related to integration? How do ontologies support semantics-based integration? Web data dynamics and integration correctness. CSCE 824 - Farkas 6
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Test 1 – Question Type 2. Apply concepts to a particular problem Assume you are using 2PL to ensure serializability. How can we extend the model to handle transactions with different security levels? Suggest a modification to 2PC to make it more efficient (less log forces or/and less number of messages) but still correct. Find a current P2P architecture that uses data replication. Evaluate the type of replication used and suggest improvements. CSCE 824 - Farkas 7
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Test 1 – Question Type 3. Suggest unsolved research problems: Given an area of the distributed databases covered in the lectures, identify a research problem that is not solved sufficiently. Justify your solution by describing a motivating example. E.g., the problem of … has been studied in the context of …. However, the current solutions are not sufficient to support … because …. For example, <give an example here>. CSCE 824 - Farkas 8
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Test 1– Question Type 4. A particular exercise from the textbook, E.g., 3.3, 3.15,3.16, 4.2, 4.3, 4.6, 4.7, 4.12, 5.4, 5.6, 5.7, 5.9, 11.12, 13.1, 13.3, 13.4 CSCE 824 - Farkas 9
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Test 1 Given 4 questions, choose 3 to solve Date: Oct. 28-Oct. 31 CSCE 824 - Farkas 10
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Security Policies
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Farkas CSCE 824 - Spring 2011 12 Security Policies Reading Text book Chapter 5 Jajodia et al., Flexible Support for Multiple Access Control Policies, http://www.cacs.louisiana.edu/~jyoon/grad/adb/References/secpap Recommended XACML 2.0 core spec., http://docs.oasis-open.org/xacml/2.0/access_control-xacml-2.0-co
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csce824-lecture11 - Review of Distributed Databases...

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