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Hardware failure: Hardware failures are the failures when some disk or hardware chip fails. This may result in loss of data. One such trouble can be that a disk gets damaged and cannot be read any more. This may be because of many reasons. For instance, a voltage fluctuation in the power supply to the computer makes it go off or some bad sectors may arrive on disk or there is a disk crash.
In all these situations, the database gets into an inconsistent state.
In a Hierarchical model of data records are organized ? In the hierarchical model of data records are organized as Tree structure.
what is primary key
List some instances of collection types? a) sets b) arrays c) multisets
For Colorado customers calculate the number of single products ordered. If a product is purchased on multiple orders, it should be counted only single time. The result should conta
Differentiate between horizontal & mixed horizontal fragmentation?
With the help of a suitable diagram gives module wise explanation of system architecture of DBMS.on..
Explain natural join? Natural Join - Similar as equi-join except in which the join attributes (having similar names) are not involved in the resulting relation. Only one sets
What does authentication refer? Authentication refers to the task of verifying the uniqueness of a person.
Data slice explanation
how many hourse have been spent on a certain project
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