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What are the states of transaction?
The states of transaction are:-
a) Active
b) Partially committed
c) Failed
d) Aborted
e )Committed
f) Terminated
How nulls are treated in comparison operator? Along with comparison (relational) operators, the null values are ignored as we cannot derive the relation along with the given op
1. Which relational algebra operations do not need the participating tables to be union-compatible? Ans: Join is the relational algebra operations that do not need the particip
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
What are uncommitted modifications? The immediate-modification technique permits database modifications to be output to the database whereas the transaction is still in the act
is Chipo carrying his baby
entity relationship diagram for online examination system
Consider an information system designed for an online company which provides IT products and services. These include desktops, laptops, networking products, IT books, parts, and te
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
how many hourse have been spent on a certain project
Define a table in SQL known as Client that is used to store information about the clients. Define CLIENT_NO as the primary key whose first letter must begin with ‘C'. Also ensure t
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