Physical database design issues, Database Management System

Assignment Help:

Physical Database Design Issues

The database design includes the process of logical design with the use of E-R diagram, normalisation, etc., followed by the physical design.

The Key issues in the Physical Database Design are:

  • The use of physical database design is to alter the logical description of data into the technical specifications for retrieving and storing data for the DBMS.
  • The aim is to create a design for storing data that will give adequate performance and make sure database integrity, recoverability and security.

Some of the basic inputs needed for Physical Database Design are:

  • Normalised relations
  • Attribute definitions
  • Data usage: retrieved, entered, deleted, updated
  • Requirements for security, recovery, backup, retention, integrity
  • DBMS characteristics.
  • Performance criterion such as response time necessity with respect to volume estimates.

Though, for this type of data some of the Physical Database Design Decisions that are to be taken are:

  • Modifying the logical design.
  • Optimising attribute data types.
  • Specifying the file Organisation.
  • Choosing indexes.

Related Discussions:- Physical database design issues

Database manager, Database Manager It is the interface among low-leve...

Database Manager It is the interface among low-level data, queries and application programs. Databases typically need a large amount of storage space. It is kept on disks, as

ERD, A student entity type has the following attributes,name..

A student entity type has the following attributes,name..

Explain weak and strong entity sets, Explain weak and strong entity sets? ...

Explain weak and strong entity sets? Weak and Strong entity sets: A physically powerful entity set has a primary key. All tuples in the group are distinguishable through that k

What is a block and a block number, What is a block and a block number? ...

What is a block and a block number? A block is a contiguous sequence of sectors from a single track of one platter. Every request specifies the address on the disk to be refere

What is database trigger, What is database Trigger? A database trigger ...

What is database Trigger? A database trigger is a PL/SQL block that can explained to automatically execute for insert, update, and delete statements against a table. The trigge

Consistency, what do you mean by consistency in rdbms?

what do you mean by consistency in rdbms?

Describe analysis of access paths, Describe analysis of access paths To...

Describe analysis of access paths To describe analysis of access paths, consider an example of the design of a company's employee skills database. A part of the object model fr

Name the various privileges in sql, Name the various privileges in SQL? ...

Name the various privileges in SQL? A) Delete B) Select C) Insert D) Update

Explain the term- inheritance, What is inheritance? Inheritance is an ...

What is inheritance? Inheritance is an object orientation concept that allows reusability of code / design. Basic sense of inheritance is that if one class is predefined than a

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