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Rules Of Data Normalisation Let us now summarise Normalisation with the help of various clean rules. The following are the necessary rules for the Normalisation process: 1.
why are older data models are being replaced by new data models
why shadow copy technique is used?
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 is B-Tree? A B-tree eliminates the redundant storage of search-key values .It permits search key values to appear only once.
The primary key is selected from the
Define reference file
Define Outer join Outer join - If there are any type of values in the one table that do not have corresponding value(s) in the other, in an equi-join which will not be selected
Attributes having a one value for a particular entity. For instance, Age is a single valued attribute of a student entity. Attributes that have more than single values
WHAT IS DSS? WRITE ITS REQUIREMENTS.
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