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Give the general form of SQL query?
Select A1, A2............., An
From R1, R2..............., Rm
Where P
can you please explain with the help of suitable example the difference between conflict equivalence and conflict serializability?
State the definition of association An association is a structural relationship which specifies that objects of one thing are connected with objects of another. In UML, asso
Describe Parameteric end users? Parametric end users might be given update access, but are commonly not permitted to change the structure of data.
What is aggregate function? Briefly describe it? Aggregate functions are functions that take a collection of values as input and return a one value. SQL offers 5 built-in aggre
List the table modification commands in SQL? A) Deletion B) Updates C) Insertion D) Update of a view
What do you mean by atomicity and aggregation? Atomicity : Either all actions are carried out or none are. Users should not have to worry about the effect of incomplete trans
Explain the Cascadeless Schedule A cascadeless schedule is one in which for every pair of transactions Ti and Tj like that Tj reads a data item before written by Ti, the commit
in case of functional dependencies how we get the higher normal form.
Which operations need the participating relations to be union compatible? A UNION, INTERSECTION and DIFFERENCE operations need the participating relations to be union compatibl
I have a homework assignment due today by midnight. I need help understanding databasse normalization and determining the type of form violation & how to fix the violation.
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