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What does authentication refer?
Authentication refers to the task of verifying the uniqueness of a person.
data models are being replaced over years. Reasons and why does that happen?
Project Description: I would like to get a database of a website which has clients email name and phone number. If you are able to get information from a website, by entering
how to calculate frequency count of algorithm
Physical Records These are the records that are stored in the secondary storage devices. For the database relation, physical records are the group of fields kept in adjacent me
Primary index A primary index is a file that has a sorted series of records having two columns: a block address for that key field in the data file; and the ordering key field.
Explain the concept of QBE? Query-by-example represents a visual/graphical approach for accessing information in a database by the use of query templates called as skeleton tab
I need some help with my normalization database homework.
What is meant by heuristic optimisation?Discuss the major heuristics that are applied during query optimisation.
What are the basic objects of the data dictionary? Tables Domains Data elements Structures Foreign Keys
Fourth Normal Form (4NF) When attributes in a relation have multi-valued dependency, further Normalization to 4NF and 5NF are needed. Let us first find out what multi-valued d
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