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CSE 511 Week 2 Exam Questions With Verified And Updated Answers

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©THESTAR EXAM SOLUTIONS 2024/2025 ALL RIGHTS RESERVED. 1 | P a g e CSE 511 Week 2 Exam Questions With Verified And Updated Answers Describe a file - answerLogical collection of data physically stored as a set of pages Name 3 alternative file organizations - answer1. Heap files 2. Sorted fil...

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  • November 24, 2024
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©THESTAR EXAM SOLUTIONS 2024/2025

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CSE 511 Week 2 Exam Questions With
Verified And Updated Answers


Describe a file - answer✔Logical collection of data physically stored as a set of pages

Name 3 alternative file organizations - answer✔1. Heap files
2. Sorted files
3. indexes

Describe the characteristics of heap files - answer✔Heap files have a header page and then a
series of data pages connected and in a random order. Suitable when accessing a large
proportion of stored records, bulk loading datas. Not efficient for selective queries or sorting

Describe the characteristics of index files - answer✔Speeds up selections on search key fields.
Think about B+ trees where non-leaf pages have index entries, only used to direct searches
Correct order of processing speed of major units in a computer from fastest to slowest -
answer✔1. CPU
2. Cache
3. Memory
4. Hard Disk
What is the name of the software component in a computer that loads pages from hard disk in
to memory? - answer✔Buffer Manager

What is a benefit of hash-based index - answer✔Good for equality selection queries. If you
want to select a specific attribute in a database with a specific condition (eg age = 10)

What is a benefit of a tree-based index - answer✔Good for range selections

High level differences clustered vs unclustered index - answer✔The sorting is different.
Clustered is ordered, Unclustered is not


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