Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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For non-unique search keys, a property was added. How does this affect B+ tree height?
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- B. Project descriptionFor this project, you will create two ADTs:• A generic ADT Binary Search Tree• An ADT Class database: This ADT contains a list of class sections. Therefore, a class representing a class sectionmust be created.arrow_forwardHi i need an implementation on the LinkListDriver and the LinkListOrdered for this output : Enter your choice: 1 Enter element: Mary List Menu Selections 1. add element 2_remove element 3.head element 4. display 5.Exit Enter your choice: 3 Element @ head: Mary List Menu Selections 1-add element 2-remove element 3_head element 4.display 5-Exit Enter your choice: 4 1. Mary List Menu Selections 1. add element 2. remove element 3.head element 4. display 5. Exit Enter your choice: LinkedListDriver package jsjf; import java.util.LinkedList; import java.util.Scanner; public class LinkedListDriver { public static void main(String [] args) { Scanner input = new Scanner(System.in); LinkedList list = new LinkedList(); int menu = 0; do { System.out.println("\nList menu selection\n1.Add element\n2.Remove element\n3.Head\n4.Display\n5.Exit"); System.out.println();…arrow_forwardIn binary search: A colors list is searched for Tan using binary search. Colors list: ( Beige, Blue, Brown, Gray, Indigo, Magenta, Maroon, Orange, Tan, Teal ) What is the first color searched? What is the second color searched?arrow_forward
- def remove_after_kth(items, k=1): Given a list of items, some of which may be duplicated, create and return a new list that is otherwise the same as items, but only up to k occurrences of each element are kept, and all occurrences of that element after those first k are discarded. Hint: loop through the items, maintaining a dictionary that remembers how many times you have already seen each element. Update this count as you go, and append each element to the resultlist only if its count is still at most equal to k. items k expected results [42, 42, 42, 42, 42, 42, 42] 3 [42, 42, 42] ['tom', 42, 'bob', 'bob', 99, 'bob', 'tom', 'tom', 99] 2 ['tom', 42, 'bob', 'bob', 99, 'tom', 99] [1, 2, 3, 4, 5, 4, 3, 2, 1, 2, 3, 4, 5, 4, 3, 2, 1] 1 [1, 2, 3, 4, 5] [1, 2, 3, 4, 5, 4, 3, 2, 1, 2, 3, 4, 5, 4, 3, 2, 1, 2, 3, 4, 5] 3 [1, 2, 3, 4, 5, 4, 3, 2, 1, 2, 3, 4, 5, 1, 5] [42, 42, 42, 99, 99, 17] 0 [ ] Please add comments between the codes so I can understandarrow_forwardYou may have found it somewhat tedious and unpleasant to use the debugger and visualizer to verify the correctness of your addFirst and addLast methods. There is also the problem that such manual verification becomes stale as soon as you change your code. Imagine that you made some minor but uncertain change to addLast]. To verify that you didn't break anything you'd have to go back and do that whole process again. Yuck. What we really want are some automated tests. But unfortunately there's no easy way to verify correctness of addFirst and addLast] if those are the only two methods we've implemented. That is, there's currently no way to iterate over our list and get bad its values and see that they are correct. That's where the toList method comes in. When called, this method returns a List representation of the Deque. For example, if the Deque has had addLast (5) addLast (9) addLast (10), then addFirst (3) called on it, then the result of toList() should be a List with 3 at the…arrow_forwardJava - Given list: ( 4, 7, 18, 48, 49, 56, 66, 68, 79 )arrow_forward
- def upgrade_stations(threshold: int, num_bikes: int, stations: List["Station"]) -> int: """Modify each station in stations that has a capacity that is less than threshold by adding num_bikes to the capacity and bikes available counts. Modify each station at most once. Return the total number of bikes that were added to the bike share network. Precondition: num_bikes >= 0arrow_forwardThe following step is used to remove first node from the AVAIL list. NEW: =AVAIL AND AVAIL: =LINK[AVAIL] Select one: True Falsearrow_forwardC++ please Please complete Programming Exercise 4, from pages 1402, from chapter 19 from your textbook. Write a function, singleParent, that returns the number of nodes in abinary tree that have only one child. Add this function to the classbinaryTreeType and create a program to test this function. (Note: Firstcreate a binary search tree.)arrow_forward
- What do the urlretrieve and urlopen functions do?arrow_forwardWhich of the following data structures cannot have an iterator implemented to iterate through? Group of answer choices 1. Hash Map 2. You can implement an iterator for all of these. 3. Linked List 4. Array 5. Binary Search Treearrow_forward
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