Function-based indexes

Assignment Help Basic Computer Science
Reference no: EM131198422

Function-Based Indexes

Database systems often provide methods for improving performance for computed columns. It is often good practice to derive data from several existing columns. However, these multi-column computations can be expensive to calculate at query time. Several techniques such as materialized views or function-based indexes can improve performance in these situations. In particular, function-based index structures store the calculated values for efficient retrieval. As part of an experiment, you can create a computed attribute and try queries with and without function-based indexes.

Reference no: EM131198422

Questions Cloud

What forces could lead to your ideal situation : What is the current situation? Why is it a problem? What is your ideal situation, that is, what would you like things to be like? What are the forces for change, that is, what forces could lead to your ideal situation?
Lead to successful erp implementations : Selection and implementation of ERP systems is time consuming and very expensive. There are a number of published cases of failed ERP systems. One such case is the failure of ERP implementation at Hershey’s that lead to empty candy shelves at a numbe..
Connected and unconnected lookup transformations : When do we use dynamic cache and static cache in connected and unconnected lookup transformations?
Why is the role of the manager critical to the success : Why is the role of the manager critical to the success of any type of training intervention? Is it possible to have a successful intervention without the manager's direct involvement? If yes, under what conditions? Explain your answer fully and in..
Function-based indexes : Database systems often provide methods for improving performance for computed columns. It is often good practice to derive data from several existing columns.
The friendly sausage factory : The Friendly Sausage Factory (FSF) can produce hot dogs at a rate of 5,000 per day. FSF supplies hot dogs to local restaurants at a steady rate of 250 per day. The cost to prepare the equipment for producing hot dogs is $66. Annual holding costs are ..
What are snapshots : What are snapshots? What are materialized views & where do we use them? What is a materialized view log?
What are some things you could do to rejuvenate yourself : Do you make a practice of taking time to stop the busyness that is your life and take care of yourself? What do you do to take care of yourself? Do you feel guilty for even thinking about taking care of your needs? What are some things you could do t..
Development of products and services-theatrical productions : Project management techniques have been used successfully for a wide range of efforts, including the many NASA space missions, huge construction projects, implementation of major systems such as ERP, production of movies, development of new products ..

Reviews

Write a Review

Basic Computer Science Questions & Answers

  The basic solutions of the simplex method.

Solve the following problem by inspection, and justify the method of solution in terms of the basic solutions of the simplex method.

  What does it mean to take a systems view of a project

As an IT project manager, you may take a systems view of a project.

  Write a bash shell script

Write a bash shell script that asks the user for a number and then tells the user whether the number is a prime number or not.  Need the answer to use /tmp/primes, a file containing the first million known primes.

  Analysis summarizing the wireless design

Provide a 7 to 10 page analysis summarizing the wireless design to the executive management team. The summary should effectively allow the senior management to understand the organization security requirements and make the appropriate decisions..

  This is a realistic option formanaged care insurance company

Explain whether this is a realistic option for a managed care insurance company.

  Discuss some key characteristics of load lines

Explain the key quantities from the data sheet of your selected transistor. Based on your selected data sheet, what are the most important quantities to be considered for a circuit designer, and why. Discuss some key characteristics of "load lines,..

  Information systems along with internet security necessary

Are Information systems along with Internet security necessary

  Businesses rely heavily on knowledge

Businesses rely heavily on knowledge about Human Computer Interaction

  Question regarding the automated checkout program

A local department store hires you to write an automated checkout program to expedite customers in a hurry. The checkout line can only accept five items for any one purchase. Design a program that asks for the price of each item, and then displays..

  Horizon books is a bookstore in downtown madina munawara

Horizon Books is a bookstore in downtown Madina Munawara. It carries an inventory of approximately 50,000 books. Customers come in and browse the shelves, select their books, and take them to one of three cashiers positioned in different parts of the..

  Years of the population mean age

What is the probability that the sample mean age of the employees will be within 2 years of the population mean age?

  Find the transformation that maps the input space

Find the transformation that maps the input space into the feature space such that the positive and negative examples become linearly separable in the feature space

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd