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It defines that the tuple in one relation that refers to another relation must refer to an existing tuple in that relation. This constraint is states on two relations (not essentia
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how to implement mid square hashing?
Describe the statement in SQL which allows to change the definition of a table? In SQL Alter statement is used to allow the changes the definition of a table.
The First Normal Form (1NF) Let us first describe 1NF: Definition: A relation (table) is in 1NF if 1. There are no duplicate tuples or rows in the relation. 2.
as a customer service employee, explain five measures you would recommend a displeased student to patronise a school canteen
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
Define access time. Access time is the time from when a read or write request is issued to when data transfer starts.
Write a query to define tables students and teachers as sub tables of people? Create table students of student under people Create table teachers of teacher under people
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