A B+-tree is to be stored on disk whose block size is 2048 bytes.to be stored are 64 bytes, and their key is 24 bytes.The data recordsDetermine the values forM and L for the B+-tree.Assume pointers are 4 bytes each.ointsFor the problem above, in the worst case, how many levels are needed to store 16,000,000 records?

B Tree – In this binary search tree, a node can have more than 2 children and is a self-balancing…

Answered: A B+-tree is to be stored on disk whose…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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write the code for this function Otur_process_s *otur_select(Otur_schedule_s *schedule) {}
Please explain these semantic actions for record types and how to execute them with the help of an example of a record type declaration. You can use the declaration: record { float x; float y; } p; as the example. T -> record '{' { Env.push(top); top = new Env(); Stack.push(ofset); offset = 0; } D '}' { T.type = record(top); T.width = offset; top = Env.pop(); offset = Stack.pop(); }
3. Consider an example of hash table of size 30, and the following items are to be stored. Design the hash table and the final array in the obtained indexes. (14, 22) (11, 18) (52,71) (41, 20) (30, 29) (33,64)
Task - 1: Write a java program to implement the following algorithms for Open Addressing techniques for Hash Table data structure. (Use a simple array of integers to store integer key values only). HASH-SEARCH(T, k) HASH-INSERT (T, k) i = 0 repeat j = h (k, i) if T[j] == NIL T[j] = k return j else i = i + 1 ● i = 0 repeat until i == m error “hash table overflow" For both algorithms, to compute the index j, write the following methods: getLinear ProbIndex (key, i) getQuadraticProbIndex ● get DoubleHash (key, i) (key, i) j = h (k, i) if T[j] == k return j i = i + 1 until T[j] == NIL or i = m return NIL Linear Probing index is computed using following hash function: h(k, i) = (h₁(k) + i) mod m h₁(k)= k mod m Quadratic probing index is computed using following hash function: h(k, i) = (h₁(k) + i²) mod m h₁(k)= k mod m Double hashing index is computed using following hash function: h(k, i) = (h₁(k) + i h₂(k)) mod m h₁(k)= k mod m h₂(k) = 1 + (k mod m - 1)
2. Suppose the function MergeSort( Vis a recursive implementation of the merge sort algorithm, which takes as input an integer array A. How many times is MergeSort( ) recursively called, if A is of size n? Answer: Select T Select Olnlogn 3. How many times is the Merge routine called in total, O(1) Oln 2) nswer. ISelect ]
Question 15
You have the list [9, 73, 89, 20, 94, 83, 57] and it needs to be sorted in place. Based on the pass status of the list during the sorting process (where all swap operations happen in place), which of sorting algorithms is being used based on the sort process below? Please explain the reason for the choice too...
c++
[5] In Partition () of QuickSort(), which final position of the Pivot will be a useful one? The first index, the middle index or the last index? Would there be any other useful one beside those indicies? Why or why not?
Objective Define a circular buffer data structure and test it. Problem Description: A circular buffer (also called a circular queue) is circular list of nodes where data items are added on one end of the buffer and removed from the other end. Because the nodes form a circular list, the list has no end or beginning: the tail node points to the head node, creating a ring of nodes. You may think of the nodes as containers or slots that are all initially empty but can be assigned a value in their data field info. Every time a new data item is inserted (inserting to a buffer is often referred as Writing), one slot is filled and the buffer has one less empty slot. Every time a data item is removed (referred to as Reading), the buffer has one more empty slot. Since the list has no beginning and no end, a pointer (writeIndex) is used to mark the next empty slot to write to and a second pointer (readIndex) is used to mark the next node to read from. The readIndex/writeIndex must be…
What is the difference between a ship operator and a rehash operator? A A rehash operator takes the output of a query subexpression and routes it to the input of a query plan on another node, while a ship operator hashes keys to machines. B A rehash operator divides ranges across the machines, while a ship operator hashes keys to machines. (C) A ship operator takes the output of a query subexpression and routes it to the input of a query plan on another node, while a rehash operator hashes keys to machines. (D) A rehash operator performs load balancing across machines, while a hash operator hashes keys to machines
What is the total weight of a minimum-cost spanning tree of the graph below (i.e., a subgraph with total cost associated with tree edges and spanning all the nodes. 6 5 3 3 2 6 A) 10 B) 21 C) 22 D) 15 E) 12 O E O B O A O D

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