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While using extract datasets it is required to have a special workarea for interface
False. It is not required to have a special workarea for interface
Define average seek time. The average seek time is the average of the seek times, calculated over a sequence of random requests.
Fragmentation: It is definite as partitioning of a relation into various fragments.Every fragment can be stored at a dissimilar site.
Association as a cache This association must be updated when any new element is added to it, but testing for overlap using association is more efficient. Figure:
For problems 1-4, give all candidate keys for the tables with FDs specified. Composite candidate keys must be put in parentheses, and candidate keys must be separated with commas
give some example real life situation where DBMS are most suitable
Define entity integrity and referential integrity. How does SQL allow specification of these? Ans: Entity Integrity Rule- If the attribute A of relation R is a prime attribut
What is meant by software and hardware RAID systems? RAID can be executed with no change at the hardware level, using only software modification. Such RAID implementations are
Greater potential for bugs: Since the sites of a distributed system operate simultaneously, it is more complex to ensure the correctness of algorithms. The art of constructing dis
What subschema expresses ? A subschema expresses the external view. (External schemas are called also called as subschemas)
From SAD to OOAD (Structured Analysis and Design (SAD) to Object Oriented Analysis and Design (OOAD). We will find here how we can map various models in SAD to different model
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