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CIS 450/550 Database and Information Systems Actual Midterm 2 with Answers . - University of Pennsylvania
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10

abril 2023

2022/2023

A+
` CIS 450/550 Database and Information Systems Actual Midterm 2 with Answers The exam is closed book (and closed friend/other source of advice). Part 1. (8 points, General MC) Select the bes t answer or answers for each of the following questions. In each question, select all that apply. 1. (2 points) When estimating the cost of a join implementation in Block Nested Loop Join and Merge Join, what is typically being counted? a. The number of comparisons performed in main memory. b. The estimated ...
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