User Account

All Pages

Clustered versus unclustered indexes

Assignment Help Database Management System
Reference no: EM13509500

If you were about to create an index on a relation, what considerations would guide your choice? Discuss:

1. The choice of primary index.

2. Clustered versus unclustered indexes.

3. Hash versus tree indexes.

4. The use of a sorted ?le rather than a tree-based index.

5. Choice of search key for the index. What is a composite search key, and what considerations are made in choosing composite search keys? What are index-only plans, and what is the in?uence of potential index-only evaluation plans on the choice of search key for an index?

Reference no: EM13509500

Questions Cloud

Search for a record based on a particular field value : For each of the following queries, which of the listed index choices would you choose to speed up the query? If your database system does not consider index-only plans (i.e., data records are always retrieved even if enough information is available i..
Prepare a new contribution format segmented income statement : Prepare a new contribution format segmented income statement for the month. Adjust the allocation of equipment depreciation and warehouse rent as indicated by the additional information provided.
Obtain the magnitude of the force : Two blocks, each with weightw, are held in place on a frictionless incline in terms ofwand the angleaof the incline. Calculate the magnitude of the force that the incline exerts on each block in N
Vivians medical expenses paid by the johnsons : Can you report on Schedule A Vivian's medical expenses paid by the Johnsons - Are expenses to prepare you for a new trade or business deductible?
Clustered versus unclustered indexes : Choice of search key for the index. What is a composite search key, and what considerations are made in choosing composite search keys? What are index-only plans, and what is the in?uence of potential index-only evaluation plans on the choice of sear..
How much time does it take to reach this height : A model rocket rises with a constant acceleration to a height of 3.2m, at which point its speed is 26m/s. How much time does it take to reach this height
Determine the mass of the other body : A body of mass 2.9 kg makes an elastic collision with another body at rest and continues to move in the original direction but with one-fourth of its original speed. What is the mass of the other body
Determine the balls speed just after the force is applied : A force in the negative direction of an x axis is applied for 24 ms to a 0.40 kg ball initially moving at 10 m/s in the positive direction of the axis. What is the ball's speed just after the force is applied
Explain the diference between hash indexes and b+- ree index : Explain the difference between Hash indexes and B+- ree indexes. In particular, discuss how equality and range searches work, using anexample.

Reviews

Write a Review

Database Management System Questions & Answers

  Analyzing hard-to-obtain data from two separate databases

You are interested in analyzing some hard-to-obtain data from two separate databases. Each database contains n numerical values.

  Physical design and implementation it requires the use of a

physical design and implementation it requires the use of a relational database management system. strayer university

  What is required to define a well-posed learning problem

Write an algorithm called \Find-G" to nd a maximally-general consistent hypothesis. You can assume the data will be noise-free and that the target concept is in the hypothesis space.

  The cio asks you to describe why you believe it is

you are the information security officer at a medium-sized company 1500 employees. the cio asks you to explain why you

  Develop an er model

You are required to develop an ER model to represent the information requirements for a database that Queensland Liquor National online trader system will use as described on last page.

  Evaluate the functional dependencies

What are the functional dependencies among the data represented in this first normal form relation?

  Find the names of employees with the highest salary

Find all department(s) with at least two employees of different names and find the department(s) with the most people and find the names of employee(s) with the highest salary.

  Create a context level dfd

Create a context level DFD. You should take your DFD to your tutorial for feedback before starting on the ER.

  You are to design a database for an insurance company the

you are to design a database for an insurance company. the data will include information about customers name address

  Explain a minimum of three 3 heuristics to optimize

your supervisors and customers are very impressed with the database you have put together. however there is still that

  Interface with some other dbms

Develop a RDBMS (Relational Database Management System) in Python. The RDBMS should actually be written in Python, not just interface with some other DBMS. This system should track students: Personal Data, Schedules and Grades. The system should cont..

  Provide an expression in relational algebra

Provide expression in relational algebra for each of the following queries: Give all the managers in database a 10 percent salary raise. Give all the other employees a 5 percent salary raise.

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!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

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