Benefits abd drawback of hashed file organisation, Database Management System

Assignment Help:

Benefits of Hashed file Organisation

1. Insertion or search on hash-key is quick.

2. Best if equality search is required on hash-key.

Drawbacks of Hashed file Organisation

1. It is a difficult file Organisation method.

2. Search is slow.

3. It suffers from disk space overhead.

4. Unbalanced buckets degrade performance.

5. Range search is slow.

Related Discussions:- Benefits abd drawback of hashed file organisation

What are the failures of controlling events between objects, What are the f...

What are the failures of Controlling Events Between Objects Failure Unintentional termination of system. Several possible causes: failure of system hardware, o

Order by clause-data manipulation language, Order by clause By usin...

Order by clause By using this rows can be sorted It is used in the last portion of select statement By default it gets ascending order DESC: is used

Write short notes on relational constraints, Write short notes on relationa...

Write short notes on relational constraints? Relational Constraints are: 1. NOT NULL 2. Unique 3. Primary key 4. Foreign key 5. Table check

Create a subroutine, 1. Create a subroutine that does the remote blast on t...

1. Create a subroutine that does the remote blast on the file protein.fa. 2. Pass that returned files from the blast to another subroutine that parses the output and sends it to

Enforce referential integrity, Use Access 2007 to create a database calle...

Use Access 2007 to create a database called UniLib.mdb. - this file should be created on your personal drive at the university (or C: if you're using Access 2007 at home) and t

Datawarehouse Case studies, I have been given 8 differebt data warehouseing...

I have been given 8 differebt data warehouseing failure case studies. I need to question 4 questions for each

Explain generalization and aggregation in e_r diagram, Explain the concept ...

Explain the concept of generalization and aggregation in E_R diagrams. Give one example for each one of them? Generalization: Consider extending the entity set account throug

Object query language and odmg schema , (a) Provide the description of t...

(a) Provide the description of the following ODMG schema in the Object Definition Language (ODL). (b) Based on the above object database, write the following queries i

Extended e-r features, Although, the essential features of E-R diagrams are...

Although, the essential features of E-R diagrams are enough to design many database situations. Though, with more difficult relations and advanced database applications, it is need

Differentiate between a subquery and a join, Differentiate between a subque...

Differentiate between a subquery and a join If we need to acquire information from one or more tables after that either subquery or join can be used. If the columns which are t

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages