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 records Determine the values for M and L for the B+-tree. Assume pointers are 4 bytes each. oints For the problem above, in the worst case, how many levels are needed to store 16,000,000 records?
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- Use C++ Programming Language. 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…A very long line: What data structure or structures would you use to maintain a very long queue of records, each having an id (some sort of string). You need to be able to find the first item in O(1) time, add to the end in O(1), and remove items in O(1) time, given some id (not index), from anywhere in the line. Additionally, you need to be able to find an item in line in O(1) time and see what items are near it (in front of or in back of) in O(1), possibly more (each is O(1) time). Explain what is stored in each Data Structure (“record (with id possibly)”, “pointers to ______”).Analyze the given linked list figure, use the following pointers (head, p1, p2, p3, p4) and choose the correct answer: head 20 30 10 p1 data p2 tmp next p3 20 p4 NULL . O p4->next is NULL p4 is NULL O p4 is equal to p3 O p4->data is 5
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