Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Benefits of heap files
1. This is a easy file Organisation method.
2. Insertion is somehow capable.
3. Good for bulk-loading data into a table.
4. Best if file scans are general or insertions are frequent.
Drawbacks of heap files
1. Retrieval needs a linear search and is inefficient.
2. Deletion can result in unused space/require for reorganisation.
What is the max. no. Of structures that can be included in a table or structure. Nine.
Let us first look into some of the important features of ER model. Entity relationship model is a high-level conceptual data model. It permits us to define the data invo
We will explain here an example database application having COLLEGE database and use it in showing several E-R modelling concepts. College database remains track of faculty, Stu
Explain mechanism of nested queries? SQL gives a mechanism for nesting subqueries. A subquery is a select from where expression that is nested within one more query. A common u
Creating views with Read only option : In the view definition this option is used to make sure that no DML operations can be done on the view.
What are the different approaches for database design? There are two basic approaches for database design which are as follows: Attribute driven: It compiles a list of att
Natural Join : It is the similar like Equi join except one of the duplicate columns is removed in the result table. The natural join is the most usually used form of join operation
What is average response time? The average response time is that the average time for a transaction to be done after it has been submitted.
What is NULL? Simply NULL means not in value.
An example of a weak entity is Staff because the availabilityID cannot be uniquely identified unless it is used in conjunction with the foreign key known as availabilityID in the A
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd