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What is called query processing?
Query processing refers to the range of activities included in extracting data from a database.
what is check point in database management system
What are the benefits of document scanning? Document scanning, in addition to being cost-efficient, also enhances productivity. This service enhances security as you set the pa
Demonstrate the Design of associations During object design phase we must design a strategy to implement associations. Association may be unidirectional or bi-directional. Wha
How many levels can be viewed in Architecture of the database ? Architecture of the database can be viewed as three levels.
Consider the relation PERSON. If you want to display details of persons having age less than or equal to 30 than the select operation will be used as follows: σ AGE The resu
Performance of Various Concurrency Control Mechanisms
Describe the nested-loop join and block-nested loop join. Ans: The block nested- loop join algorithm is as described below: for every block B r of relation R do beg
Relational Algebra is a set of basic operations used to influence the data in relational model. These operations allow the user to specify basic retrieval request. The result of re
Define Fifth Normal form is concerned with Ans : Fifth Normal form is concerned with Join dependency.
What is a primary key? Primary key is chosen by the database designer as the principal means of identifying an entity in the entity set.
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