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

What is key, What is key ? Key - A single attribute or a combination of...

What is key ? Key - A single attribute or a combination of two or more attributes of an entity set which is used to recognize one or more instances (rows) of the set (table) is

Describe the algorithm for updating indices, Describe the algorithm for upd...

Describe the algorithm for updating indices for a single level index when a record is    (i) Inserted  (ii)  deleted What will be the modification if there are multilevel in

Two types of blocks in the fixed -length representation, What are the two t...

What are the two types of blocks in the fixed -length representation? Define them. Anchor block: Have the first record of a chain. Overflow block: Have the records other tha

How does the two phase protocol ensure serializability, How does the two ph...

How does the two phase protocol ensure serializability in database schedules?   Ans:  A transaction is termed to follow the two-phase locking protocol if all locking operations

What are the object-oriented approaches, What are the object-oriented appro...

What are the object-oriented approaches Software systems which are designed with structured design methodology never support some of desired quality attributes for example reus

Insert into command, INSERT INTO command : Values can be inserted fo...

INSERT INTO command : Values can be inserted for all columns or for the selected columns Values can be given by sub query. In place of values parameter substitution

Explain the 10 reasons to use mysql, Question 1 Explain the 10 reasons to ...

Question 1 Explain the 10 reasons to use MySQL Question 2 Write the SQL statements to demonstrate the following using SELECT command Expression Evaluation ORDER BY

Physical model of traffic data management, After the completion of the logi...

After the completion of the logical model the physical model is to be made. The oracle 10 G will be used as a database server and all the tables with their column are created and i

State the definition of association, State the definition of association ...

State the definition of association An association is a structural relationship which specifies that objects of one thing are connected with objects of another. In UML, asso

What functions does a data dictionary perform, What functions does a data d...

What functions does a data dictionary perform? In a (DBMS)data management system, the principal functions performed by the data dictionary are Management of data defini

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