CS3402 1 CS3402 Chapter 11: Concurrency Control Semester B, 2020/2021 Database Concurrency Control Purposes of Concurrency Control: To preserve database consistency To maximize the system performance (higher concurrency) A lock is a variable associated with a data item that describes its status with respect to possible operations that can be applied to it. […]
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PowerPoint Presentation COMP30023 – Computer Copyright By PowCoder代写 加微信 powcoder Application Layer – HTTP and HTML • History of the internet • Network Protocol Models (stacks) • OSI vs TCP/IP • Acknowledgement: • These slides are minor modifications of those prepared by University of Melbourne • Top-down approach – We’ll gradually peel away the layers
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Question 1 (a) Assume a webserver is accessible only via TLS with Forward Secrecy. The operator of the webserver wants to enable a webfilter which checks all incoming traffic to the webserver for malware before it reaches the webserver. (i) Why is this not possible if the webfilter only gets the private key of the
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Security and Networks: Exercise 4 Deadline: 12:00 noon on Tuesday 27 April Web Security It¡¯s time to take a look at the company¡¯s website and find out what is really going on. You can find the company¡¯s site by going to sensiblefurniture.com on the VM. The .com address does not work from outside the VM.
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Entity-Relationship Model • • • Entities Attributes Relationships • Objects: data + methods • – Not an object Entity: only data Entity – Leads to a entity type (serves same purpose as OO class) – Ex: Student, Account, Book – Usually a noun in requirements, a term in business rule • • Entity defined as
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Transactions Reading: http://en.wikipedia.org/wiki/Database_transact http://en.wikipedia.org/wiki/Serializability http://en.wikipedia.org/wiki/Schedule_(comput – http://www.postgresql.org/docs/9.4/static/tutorial-t discusses savepoints • • • • Definition, ACID Serializability Recoverability i e r Definition set of operations that access the database • – SQL includes START TRANSACTION, ROLLBACK and COMMIT – Statements following START TRANSACTION until either ROLLBACK or COMMIT are part of the transaction – transactions must
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The Internet’s Directory Service DNS: Domain Name System Copyright By PowCoder代写 加微信 powcoder people: many identifiers: IRD #, name, passport # Typical web browser’s task Internet hosts, routers: www.google.co.nz IP address (32 bit) – used for addressing datagrams “hostname”, e.g., www.yahoo.com – used by humans Find IP address Q: map between IP
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COMP4337/9337: Securing Fixed and Wireless Networks WK05-02: Link Layer Security (additional foils) Professor Sanjay K. Jha Link Layer Security Copyright By PowCoder代写 加微信 powcoder Ø 802.1X Port based Authentication Ø Security issues in Ethernet switched LAN Ø Security issues in Wireless LAN These extra foils are examinable but left as self-reading. Reference: Cybok Network Security
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Coursework 1 specification for 2022 Data Analytics ECS648U/ ECS784U/ ECS784P Revised on 01/02/2022 by Dr Anthony Constantinou 1. Important Dates • Release date: Thursday 3rd February 2022. Copyright By PowCoder代写 加微信 powcoder • Submission deadline: Monday 14th March 2022 at 10:00 AM. • Late submission deadline (cumulative penalty applies): Within 7 days after deadline. General
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BISM7202 Information Systems for Management Assessment Guideline: MS Office Assignment – Office 365 Excel 2019 SEMESTER 1 2021 BISM7202 – Information Systems for Management Summary Type: Individual Computer-based Assessment Learning Objectives Assessed: 3, 4 Due Date: 2:00 pm 20th May 2021 Deliverable: One electronic file must be submitted via the Blackboard Assignment Submission Tool consisting
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