Write short notes on index structure of files, Database Management System

Assignment Help:

WRITE SHORT NOTES ON INDEX STRUCTURE OF FILES?

There are two basic parts of indices

1.   Ordered indices

2.   Hash indices

Every technique must be evaluated on the basis of these factors:

  • Access types
  • Access time
  • Insertion time
  • Deletion time
  • Space overhead

Ø  Ordered indices

Ø  Primary index

Ø  Dense and sparse indices

Ø  Multilevel index

Ø  Index update

Ø  Secondary indices

B+-Tree index files

B+-Tree index structure is the most widely used of various index structures that maintain their efficiency despite insertion and deletion of data.

Ø  Structure of B+-Tree

Ø  Queries on B+-Tree

Ø  Update on B+-Tree

Ø  B+-Tree file organization

Ø  B-Tree index files

 


Related Discussions:- Write short notes on index structure of files

Many-to-many relationship, Many-to-many : Entities in A and B are related w...

Many-to-many : Entities in A and B are related with any number of entities from each other. Example: Taught_by Relationship among course and faculty. One faculty member ca

BOGUS VS GENUINE EMPOWERMENT, what is bogus empowerment. And what is genuin...

what is bogus empowerment. And what is genuine empowerment

Write short notes on data ware housing, Write short notes on data ware hous...

Write short notes on data ware housing? Data ware housing applications needs the transformation of data from many sources into a cohesive reliable step set of data configured a

Online examination system project, entity relationship diagram for online e...

entity relationship diagram for online examination system

Define- relational algebra, Define- relational algebra. The relational ...

Define- relational algebra. The relational algebra is a procedural query language. It having of a set of operations that take one or two relation as input and make a new relati

Eliminate repeating groups, Eliminate Repeating Groups The problem is, ...

Eliminate Repeating Groups The problem is, "Find out the list of employees, who knows DB2". For this problem we require to perform an awkward scan of the list looking for re

Er model, There are a number of possible solutions to the open ended brief....

There are a number of possible solutions to the open ended brief. One of the simple ones is shown here without the PKs and FKs. It is important to think of how a number of tasks

Sql, Events4Fun is an event management company in Europe with branches in S...

Events4Fun is an event management company in Europe with branches in South America as well. The company is well-known for its efficiency, good-quality services, and affordable char

Difference among a primary index and a secondary index, What is the differe...

What is the difference among a primary index and a secondary index? Primary Index: A primary index is an ordered file whose records are of fixed length along with two fields.

What database management system, Company XYZ is an advertising company. It...

Company XYZ is an advertising company. It has its own website but the search facilities offered are not reliable. The company is willing to invest to acquire new machines and sof

Write Your Message!

Captcha
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