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

Access data using logical database, If one requires to access data using...

If one requires to access data using Logical Database , the use of events is unavoidable. Yes, if someone wants to access data using Logical database then the use of events

Relation schema for student, Example RELATION SCHEMA for STUDENT: STU...

Example RELATION SCHEMA for STUDENT: STUDENT (Roll No: string, name: string, login: string, age: integer) RELATION INSTANCE

What is natural language interfaces, What is Natural Language Interfaces? ...

What is Natural Language Interfaces? Natural Language Interfaces - These interfaces accept requests written within English or a few other language and attempt to "understand" t

Mention constraints to create command ddl, Mention the type of constraints ...

Mention the type of constraints we can specify in the CREATE command of DDL. The type of constraints that can be specified are as follows:- PRIMARY KEY, NOT NULL, UNIQUE, FOR

CMIS 420 Homework Assignment 2, describe all the tables you have created. ...

describe all the tables you have created. ?get table_name, status, num_rows, user_stats in user_tables system view ?get table_name, constraint_name, constraint_type in user_constr

Explain categories of failures that occur in oracle database, Explain diffe...

Explain different categories of failures that occur in Oracle database? Categories of Failures - In Oracle database subsequent types of failures can occurred: Statement Failu

Differentiate between static hashing and dynamic hashing, Differentiate bet...

Differentiate between static hashing and dynamic hashing.  Ans: Static Hashing comprises the number of primary pages in the directory fixed. So, while a bucket is full, we requ

Describe the relational model, a) Distinguish between ‘database' and ‘Data...

a) Distinguish between ‘database' and ‘Database Management Systems (DBMS)'. b) List and briefly describe five potential benefits of the database approach compared to conventio

DBMS, to develop elrctronic database from manual forms

to develop elrctronic database from manual forms

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