Suppose you need to sort relation r using sort—merge and merge—join the result with an already sorted relation s.The same idea is applicable even if both inputs to the merge join are the outputs of sort—merge operations. However, the available memory has to be shared between the two merge operations (the merge—join algorithm itself needs very little memory). What is the effect of having to share memory on the cost of each sort-merge operation?

Q: Let R(ABCDEFG) be a relation and F={A -> C, A-> D, B->F, E->F, F->G} a. Show example of lossless…

A: According to the information given:- We have R(ABCDEFG) F={A -> C, A-> D, B->F, E->F,…

Q: 14.20 Suppose there is a relation r(A, B, C), with a B+-tree index with search key (A, B). 14.21 a.…

A: Solution: 14.20. a) In terms of the number of records retrieved n1 and height h of the tree, the…

Q: Draw a dependency graph between any two courses from the table given below. Then you need to find a…

A: First and foremost, a dependency graph must be created. So, if course v requires course u, you'll…

Q: SOLVE THE BELOW PROBLEMS CONSIDERING GIVEN TABLES. PK EMP FK EMPNO ENAME MGR DEPTNO SAL COMMISSION…

A: Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: Using the figure below, update the table of C once. Assume it's a cold start and that C is not…

A: Solution:-   1. Stateless Address Autoconfiguration (SLAAC) SLAAC is a method in which a device can…

Q: Relative to the ordering 1, 2, 3, 4 the following relation R is transitive. [o 0 1 1] 0 10 0 10 10…

A: To find if the given matrix is transitive or not we have to prove something    MR = M2 R+ MR  No we…

Q: If n is the number of elements in an array and h represent the height of a binary tree, which of the…

A: Let, total number of elements in an array = n height of the binary tree = h For comparison in sort…

Q: The record searching technique in which the searching of records is done by block by block is…

A: Heap search : In the file, every record has a unique id, and every page in a file is of the same…

Q: MergeSort(A, p, r):     if p > r          return     q = (p+r)/2     mergeSort(A, p, q)…

A: I have given an answer in step 2.

Q: Consider two relations R(a,b) and S(c,d) that are both horizontally partitioned across N = 3 nodes…

A: The Database is the collection of data and information. The query language is used to manipulate the…

Q: For the following number patterns write the recurrence relation i) 5, 8.2, 11.4, 14.6, …. ii) 400,…

A: Recurrence relation for above are:      i)  an  = an-1 + 3.2            ;  n >= 1     a0  = 5

Q: if we would like to represent merge sort in terms of occurence relation T(n)=aT(n/b)+f(n), what…

A: Given: Represent merge sort in terms of occurence relation T(n)=aT(n/b)+f(n),  We have to discuss…

Q: Exercise 11.7 Consider a relation R(a, b, c, d) containing 1 million records, where each page of the…

A: Please find the answer below:

Q: Suppose there is a relation r(A, B, C), with a B+-tree index with search key(A, B). What is the…

A: Let us consider the relation R(A,B,C) with search keys(A,B) along with the B+-tree.In which B+-…

Q: Q2. Give the optimal estimate for the disk-IO cost of r JOIN s using (2.a) Sort-merge join,…

A: According to the information given:- we have to find the optimal estimate for the disk IO cost.

Q: What is a recurrence relation for the following Mergesort algorithm? MergeSort(A, p, r):     if p >…

A: MegreSort is a sorting algorithm used to sort an array by dividing into 2 halves recursively and…

Q: The p operation eliminates duplicate tuples in the resulting relation. So: p Gender, Salary…

A: The question is ambiguous, it can't be determined if the user wants to remove all the duplicates…

Q: Write a program that will accept a sequence of `insert’ and `delete’ operations in dynamic table and…

A: Given:- Write a program that will accept a sequence of `insert’ and `delete’ operations in the…

Q: The data item written by a committed transaction should be immediately stored on the disk. O True O…

A: According to the question on the database so many operation you can done. But so many operation you…

Q: Consider F = {BC -> D, B -> E, CE -> D, E -> CA, BF -> G} and R(A,B,C,D,E,F,G) 8.Apply the lossless…

A: Decomposition of a relation is done when a relation in relational model is not in appropriate normal…

Q: Write an algorithm for implementing a `delete’ operation in dynamic table.

A: Dynаmiс  Tаble  is  the  tаble  where  we  hаve  tо  uрdаte  the  rаnge  оf  dаtа  reрeаtedly. There…

Q: Problem 2: wn, As B (number of buffer frames) grows, one's join algorithm choice can change: Order…

A: Hey there, I am writing the required solution of the questin mentioned above. Please do find the…

Q: 1. Suppose we have the following two relation. (1) Can we perform cross product on R and S? Why? (2)…

A: YES, we can. Cross join or cross product can be performed on any type of table. Syntax:  SELECT *…

Q: data structures and algorithms,what is the disadvantage in using a circular linked list?

A: Circular linked list is a linked list data structure where the last node points to the first node of…

Q: does increasing the number of partitions of the merge sort function worsen its time complexity?…

A: Okay so Merge Sort has a time complexity of Θ(n . log n) for all cases. This would include cases…

Q: A B+ tree index is to be built on the Name attribute of the relation STUDENT. Assume that all…

A: Introduction :Given ,B+ treeStudents name length = 8 Byte block size = 512 Byte index pointer size =…

Q: Write down the working principle of Region Merging Algorithm.

A: The ability to segment images is critical to our interpretation of them. As a result, a lot of time…

Q: Apply algorithm 4.1.2 in P.140 with T=63, n=12 and A=(3,5,8,8,9,16,29,41,50,63,64,67). Draw the…

A: T=63, n=12 and A=(3,5,8,8,9,16,29,41,50,63,64,67).    A[1]=3,       A[2]=5 ,    A[3]=8,      A[4]=8,…

Q: Consider a relation R(a, b, c, d) containing 1 million records, where each page of the relation…

A:

Q: Consider a relation s(A,B) having 700,000 tuples such that 70 tuples fit into one disk block.…

A: Problem Introduction: Consider a relation s(A,B) having 700,000 tuples such that 70 tuples fit into…

Q: Consider the bank database of Figure 15.14, where the primary keys are underlined.Suppose that a…

A: Given: Consider the bank database of Figure 15.14, where the primary keys are underlined.Suppose…

Q: Let M(m,n) denote the number of comparisons required to merge two sorted lists of sizes m and n.…

A: Answer :-

Q: Let r and s be relations with no indices, and assume that the relations are not sorted. Assuming…

A: Let r and s be relations with no indices, and assume that the relations are notsorted. Assuming…

Q: Describe how to incrementally maintain the results of the following operationson both insertions and…

A: Describe how to incrementally maintain the results of the following operationson both insertions and…

Q: Consider a table T in a relational database with a key field K. A B-tree of order p is used as an…

A: Introduction:in B-Tree Given,K = 10 byteBlock Size = 512 bytesPD = 8 bytesPB = 5 bytesTo fit each…

Q: 1. Please show big O notations of the recurrence relations below (please show detailed steps for…

A: Defined the big O notations relations given recurrence relation

Q: Suppose you are given a relation r(a, b, c).a. Give an example of a situation under which the…

A: Given: Suppose you are given a relation r(a, b, c).a. Give an example of a situation under which the…

Q: AB-Tree of order 5 with a minimum of 3 keys and a maximum of 5 keys is shown below. If Key N is…

A: The rules for deleting a key k from a node n:   Rule 1. If n has more than the number of keys and…

Q: Describe a good way to parallelize each of the following: a. The difference operation b. Aggregation…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: Consider B+ tree Intra-Node Search, which of the following approaches does NOT require the key/value…

A: Answer is in step 2

Q: Q2. Give the optimal estimate for the disk-IO cost of r JOIN s using (2.a) Sort-merge join, assuming…

A: Here the solution is given for optimal estimate for the disk-IO of r join s

Q: Suppose you have a file with 10000 pages and you have three buffer pages. If a most general…

A: How many runs will you produce in the first pass? In the first pass (Pass 0), [N/B] runs of B pages…

Q: (b) Assume that relation PROJ is fragmented as PROJ1 = OPNOS"P2" (PROJ) PROJ2 = «PNO>"P2" (PROJ)…

A: Given that relation PROJ is horizontally fragmented in PROJ1 = δPNO ≤ “P2” (PROJ)…

Q: What is the worse case complexity of this recurrence relation: T(n) = T(n-1) + n represents ?…

A: Given recurrence relation is T(n)=T(n-1)+n We have to check, which given sorting technique gives…

Q: Let R(ABCDEFG) be a relation and F={A -> C, A-> D, B->F, E->F, F->G} a. Show example of lossless…

A: According to the information given:- We have R(ABCDEFG) F={A -> C, A-> D, B->F, E->F,…

Q: n Hadoop, the right number of reduces seems to be ____________ a) 0.90 b) 0.80 c) 0.36 d) 0.95

A: Reducer takes output from mapper and performs aggregation of that output. Output from mapper is…

Q: The recurrence relation of the divide phase of merge function is T(n)=2T(n/2) and merge as O(n). The…

A: The recurrence relation for the actual merging procedure is, T(n)=2T(n/2) The merge time complexity=…

Q: Error 1305 Function ap.GROUPING does not exist

A: GROUPING is not implemented in MariaDB. Unless terms_id can be NULL, then use COALESCE() in place of…

Q: 1 Draw a dependency graph between any two courses from the table given below. Then you need to find…

A: Please find the answer below:

Q: Suppose you want to get answers to r ⋈ s sorted on an attribute of r, andwant only the top K answers…

A: We can write query as: SELECT attribute1,attribute2  FROM TableR JOIN TableS ON TableR.r=TableS.s…