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- A File was sorted by key field, and then 10 records were stored in each block. Multi-level Indexing is made here, and 100 indexes are stored in each block. To find a specific record, the total number of block accesses is less than 4. Calculate the maximum number of records that make up this file.A file has a dense secondary index with blocking factor equal to 64 index entries per block. If the total number of blocks for the first index level is 1024 blocks, answer the following questions: What is the total number of blocks needed for the second and third level indexes? How many blocks need to be accessed to access a record in this three level index?An index file is always larger than the original database file because the index file needs to store an additional pointer to each record. true or False?
- A movie file has the following record structure:name ofthe movie producer director type productioncostAssume that the name of the movie is the primary key of the file. Thefield type refers to the type of the movie, for example, drama, sci-fi, horror, crimethriller, comedy and so forth. Input a sample set of records of your choice into themovie file.i) Implement a primary index-based ISAM file organization.ii) Implement secondary indexes on director, type and productioncost.To store an item file with the item number as its main key, create a direct file organization using a hash function. The following table lists the primary keys of a sample collection of item file records. Assume that the blocks in the main storage area can hold a maximum of four records per block and that the buckets can hold two records each. Utilize the hash function h(k) = k mod 8, where k is the main key's numerical value. (item number).369 760 692 871 659 975 981 115 620 208 821 111 554 781 181 965To facilitate the retrieval of specific records from a file, one field in each record is chosenas a(n)________________
- The method of file organization in which data records in a file are arranged in a specified order according to key field is known as the (A) Sequential access method (B) Queuing method (C) Predetermined method (D) Direct access methodYou are required to propose FOUR functions to develop a complete student record management system. The function are insert, delete, search, update. In addition, you need to use linked list to complete the system development. Write a program by extending the code from the lab. Think and implement 4 more functions in the program (compulsory function is sorting and searching) Your must build on top of the following code. //FileName: Student.cpp //This program illustrates attributes of class Student using simple data structure #include <iostream.h> class Student { private: struct Data { char Name[25]; char Course[30]; int Result; } stdata; public: void SetData(); void GetData(); };//class Student void Student::SetData() { cout <<”Enter student name:”; cin>> stdata.Name; cout<< “Enter student course: “; cin>> stdata.Course; cout<< “Enter student result:”; cin>> stdata.Result; };//method SetData void Student::GetData() { cout<< “\n…Is it possible for files to become clustered after they have been filled with records?
- Design a direct file organization using a hash function, to store an item file withitem number as its primary key. The primary keys of a sample set of records ofthe item file are listed below. Assume that the buckets can hold two records eachand the blocks in the primary storage area can accommodate a maximum of fourrecords each. Make use of the hash function h(k) = k mod 8, where k represents thenumerical value of the primary key (item number).369 760 692 871 659 975 981 115 620 208 821 111 554 781 181 965• Maintain a database in a file:o Add a new vehicle to the fleet. Vehicle information should include▪ Model year▪ Make▪ Model name▪ License plate number▪ Customer number who is currently renting vehicleo Deleteavehiclefromthefleeto Rent a vehicle to a registered customero Receiverentedvehiclebackfromcustomer o Search vehicle database by any field:▪ Model year + Make + Model name▪ License plate number▪ Customer number who is currently renting vehicle And print out all matching records16.31 - A PARTS file with Part# as hash key includes records with the following Part# values: 2369, 3760, 4692, 4871, 5659, 1821, 1074, 7115, 1620, 2428, 3943, 4750, 6975, 4981, 9208. The file uses 8 buckets, numbered 0 to 7. Each bucket is one disk block and holds two records. Load these records into the file in the given order using the hash function h(K)=K mod 8. Calculate the average number of block accesses for a random retrieval on Part#. 16.32 - Load the records of Exercise 16.31 into expandable hash files based on extendible hashing. Show the structure of the directory at each step. Show the directory at each step, and the global and local depths. Use the hash function h(k) = K mod 128.