3. a) Assume that you have a file size 50 and you were asked to map the fowling keys to the file using modules approach. Show ALL steps, Zero CREDIT WILL BE ISSUED IF ALL STEPS ARE NOT SHOWN Show how the keys are mapped to the file 457, 553, 409, 399, 257, 189, 666 b) If you encountered any collisions during the mapping process, explain what approach you took to resolve it.

3. a) Assume that you have a file size 50 and you were asked to map the fowling keys to the file using modules approach. Show ALL steps, Zero CREDIT WILL BE ISSUED IF ALL STEPS ARE NOT SHOWN Show how the keys are mapped to the file 457, 553, 409, 399, 257, 189, 666 b) If you encountered any collisions during the mapping process, explain what approach you took to resolve it.

Programming Logic & Design Comprehensive

9th Edition

ISBN:9781337669405

Author:FARRELL

Publisher:FARRELL

Chapter8: Advanced Data Handling Concepts

Section: Chapter Questions

Problem 19RQ

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1- Answer the following questions: a. What is an index on a file of records? b. Why do we need indexes? c. Explain the difference between Hash indexes and Tree-based indexes for range and equality queries.
136. What is hashing file organization? a. Any record can be placed wherever there is a space for the record b. Records are stored in a sequential order according to a search key c. A hash function is computed on some attribute and that decides the block d. None of the mentioned
Suppose we have a record file constructed according to the SimpleDB specificapoints) Suppose we have a record file constructed according to the SimpleDB specifications. That is, the block size is 400 bytes, an integer occupies 4 bytes, a string requires an integer length plus one byte per character, and each slot of a record page has an integer INUSE/EMPTY flag; records do not span multiple pages. For each of the tables in the sample database (and assuming there are many records in each table, not just the given sample data), determine how many records will fit per block (be sure to show your calculations). Is there any wasted space in any of the blocks?tions. That is, the block size is 400 bytes, an integer occupies 4 bytes, a string requires an integer length plus one byte per character, and each slot of a record page has an integer INUSE/EMPTY flag; records do not span multiple pages. For each of the tables in the sample database (and assuming there are many records in each table,…
How many records does the file contain? How many fields are there per record? What problem would you encounter if you wanted to produce a listing by city? How would you solve this problem by altering the file structure? If you wanted to produce a listing of the file contents by last name, area code, city, state, or zip code, how would you alter the file structure? What data redundancies do you detect? How could those redundancies lead to different types of anomalies?
Step 1 Let us see the answer:- Introduction:-A single table may be used in a simple database, such as a contact list. Many databases, on the other hand, make use of many tables. When you establish a new database, you create a new file on your computer that serves as a container for all of your database's objects, including tables. A table can be created by starting a new database, inserting a table into an existing database, or importing or linking to a table from another data source such as a Microsoft Excel workbook, a Microsoft Word document, a text file, or another database. A new, empty table is automatically inserted when you create a new, blank database. After that, you may start defining your fields by entering data into the table. Step 2 Add a field by entering a data You can add a field to a table by entering data in the Add New Field column of the datasheet when you create a new table or access an existing table in Datasheet view. Based on the value you enter, Access…
A primary index is created on a a) non-key, non-ordering attribute of a file b) non-key, ordering attribute of a file c) key, non-ordering attribute of a file d) key, ordering attribute of a file
A unique secondary index is created on a a) non-key, non-ordering attribute of a file b) non-key, ordering attribute of a file c) key, non-ordering attribute of a file d) key, ordering attribute of a file
Discuss the advantages and disadvantages of using Hashed files. Which operations can be performed to handle collisions?
please do not copy and make your answer uniq. Question One Suppose a group of 9 sales price records has been stored as follows: 9, 25, 28, 30, 48, 72, 78, 195, 213 Partition them into three bins then smoothing them by the following methods: a) Partition into equal-width then smoothing by bin means. b) Partition into equal-depth then smoothing by bin boundaries.
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Name any five advantages of Database system over Traditional File Based System. Write only names don't write description. A- Use the upload link after Question 26 to upload the answer. (image, word, F practical files) يعد السؤال 26 لتحميل الإجابة. )صورة، كلمة، pdf، او الملفات العملية( a ---

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