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Assignment
Write a Assignment to study and modify the PostgreSQL source code, with a focus on one of the core modules - the buffer manager. Specifically, you are required to implement the Least Recently Used (LRU) buffer replacement policy by understanding and modifying the current code provided in PostgreSQL version 8.2.19, which comes with an implementation of the clock buffer replacement policy. You may find that the amount of code to write in this project is minimal, but you have to understand the codebase first before you know where and how to write your code.
Imagine that you work for a finance industry-based organization. Your organization is looking to submit its database design documentation to an evaluation team in order to meet Sarbanes-Oxley (SOX) compliance. You have been assigned to assist in p..
Over 70% of web applications use database to store persistent data. Write some of the problems and issues associated with internet databases?
Show the FDs in this resulting relation. Is it in 2NF Is it in 3NF? Why or why not? (State assumptions, if you make any.)
Using the descriptions of the attributes given in the, convert the ERD shown in Figure P6.2 into a dependency diagram that is in 3NF.
our current database uses dictionary-managed tablespaces. In running various performance tuning scripts, you have discovered that one of these tablespaces seems to have run out of space long before you calculated that it would.
Consider a student club or organization in which you are a member. What are the data entities of this enterprise? List and define each entity
Describe the information seen, using the terms such as table, schema and key. Describe the EMPLOYEE and EMP_PHOTO tables in detail.
Explain a good strategy for processing each of following queries. Determine all machines at Almaden plant. Determine employee 1 machine.
Explain the use of facts, dimensions and attributes in a star schema model. Explain the use of facts, dimensions and attributes in a star schema model.
Summarize the difference between online transaction processing (OLTP) and online analytic processing (OLAP), and their relationship among business intelligence, data warehousing, and data mining.
Write an algorithm called \Find-G" to nd a maximally-general consistent hypothesis. You can assume the data will be noise-free and that the target concept is in the hypothesis space.
Write clearly and concisely about Systems Analysis and Development topics using proper writing mechanics and technical style conventions.
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