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What is meant by data-transfer rate?
The data-transfer rate is the rate at which data can be retrieved from or kept to the disk.
what characterizes the levels in RAID technology
Give an example of enforcement in Typing. You can understand the idea of enforcement as it makes sure objects of dissimilar classes may not be interchanged as below: Exampl
properties of derirable decomposition
What is conceptual schema? The schemas at the view level are known as subschema that describe dissimilar views of the database.
tell me the functionality,advantages and disadvantages of student database
Answer SQL Queries to extract data from data tables and questions on mapping conceptual data models into relational data model.
What is a super key? A super key is a set of one or more attributes that collectively permits us to recognize uniquely an entity in the entity set.
How many types of Views are there? There are Four types of views:- Database View Help View Projection View Maintenance View
The primary key is selected from the
What are called index-sequential files? The files that are ordered sequentially with a primary index on the search key are known as index-sequential files
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