What is the difference between serial and sequential files, Database Management System

Assignment Help:

What is the difference between serial and sequential files? How searching is applied on both?   

Ans: A serial file is one where the records have been stored in the order where they have occurred. They have not been sorted into any specific order.

An instance of a serial file is an unsorted transaction file.

A shopping list is an instance of a non-computerised serial file. Items are appended to the list while that item runs low.

Serial files can be stored on tape, disc or in memory.

A sequential file is one where the records are stored in sorted order of one or more key fields.

An instance of a sequential file is a sorted transaction file.

A class register is an instance of a non-computerised sequential file sorted on surname

 


Related Discussions:- What is the difference between serial and sequential files

I need web security expert, I need web security expert , website management...

I need web security expert , website management Project Description: i want professional for the below . website management server management database management

What is system catalog or catalog relation, What is system catalog or catal...

What is system catalog or catalog relation? How is better known as? A RDBMS maintains a explanation of all the data that it contains, information about every relation and index

Cartesian product, If R1 and R2 are two relations or functions, then the re...

If R1 and R2 are two relations or functions, then the result of R3 = R1 × R2 is the combination of tuples that are in R1 and R2. The product is associative and commutative. Degr

What is the error handling, What is the error handling Traditionally, b...

What is the error handling Traditionally, bits have been sent over line lacking any error correcting scheme in physical layer. The presence of the CPU in each modem makes it po

What is primary key, What is Primary key? Primary Key - Primary key i...

What is Primary key? Primary Key - Primary key is one of the candidate keys which uniquely identifies each row in the relation.

What are called journaling file systems, What are called journaling file sy...

What are called journaling file systems? File systems that support log disks are known as journaling file systems.

Develop a flowchart using the decision structure, 1.  Develop a flowchart u...

1.  Develop a flowchart using the decision structure to solve the following problem. A Box Lunch Bonanza is a small catering company that offers 2 different types of box lunches

List and also explain the dissimilar stages of ddlc, List and also explain ...

List and also explain the dissimilar stages of DDLC ?

Hierarchical model is also known by, Hierarchical model is also known by? ...

Hierarchical model is also known by? A hierarchical model is also known as a Tree structure.

Develop network database ipad app, I want an iPad app that is a simple 1 pa...

I want an iPad app that is a simple 1 page form to complete with text. The Objective is to allow a few dozen people of the same organization (they're all on iPad) to open the app,

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