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What is a view?
A view is a logical view on one or more tables. A view on one or more tables i.e., the data from a view is not actually physically kept instead being derived from one or more tables.
what do you mean by primary key constraint?
We require an advanced system for a Sports Centre, you are concerned only with representing the data discussed below about bookings and members. (The complete system may contain ot
The Third Normal Form (3NF) Even though, transforming a relation that is not in 2NF into a number of relations that are in 2NF take out many of the anomalies, it does not neces
Determine the Derived attribute to avoid re-computation Each class box consists of an ordered list of attributes and operations, each represented as a next string. We can find
Ask questiwhat is row indicator in database on #Minimum 100 words accepted#
Process to find the non-concurrent objects Once we find out non-concurrent (mutually exclusive) objects, we can fold all objects together in one thread of process or control. O
What is the use of unique function? UNIQUE function: If UNIQUE is specified then only unique values are used to computed the mean.
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List the drawbacks of relational database system A) Repetition of data B) Inability to s certain information.
Define access time. Access time is the time from when a read or write request is issued to when data transfer starts.
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