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Importance Of File Organisation In Database
To execute a database efficiently, there are various design tradeoffs needed. One of the most vital ones is the file Organisation. For instance, if there were to be an application that need only sequential batch processing, then the use of indexing methods would be pointless and wasteful.
There are various important consequences of an inappropriate file Organisation being used in a database. Therefore using replication would be wasteful of space besides posing the trouble of inconsistency in the data. The wrong file Organisation can also-
Needless to say, these could have a lot of undesirable consequences at the user level, such as making some applications impractical.
The PROJECT operation The project operation is used to choose the records with specified attributes as discarding the others based on some related criteria. This is denotes as ∏
Using Relational Algebra which query finds customers, who have a balance of over 1000 ? Using Relational Algebra Π Customer_name( σ balance >1000(Deposit)) is query to find cu
First Normal Form and second normal form First Normal Form (1NF) A relation is said to be in 1NF if it having no non-atomic values and each row can give a unique combinat
what is check point in database management system
Describe the difference between a one-to-many and a many-to-many relationship. Which logical data structures comprise one-to-many and which comprise many-to-many relationship?
Modular growth: In distributed environments, it is simple to expand. Latest sites can be added to the network without affecting the operations of other sites, as they are somewhat
A View may be defined of as a virtual table, that is, a table that does not really exist in its own right but is instead inferred from one or more underlying base data table. T
Problem: A DBMS built for Online Transaction Processing (OLTP) is usually regarded as unsuitable for data warehousing. Each system is designed with a different set of requireme
Process-oriented decompositions Process-oriented decompositions divide complex process, task or function into simpler sub processes until they get simple enough to be deal
wh
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