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What are the Overlapping elements
Overlapping elements can be found by scanning all the elements in front of deleted element in priority list for the sheet and comparing them with the deleted element. If number of the element is large, this algorithm grows linearly in number of elements.
Differance between internal and external schema? Internal and external schema: Internal Schema • Describes the physical storage structure • Uses a physical data model External
What Is Recovery? During the life of a transaction, i.e., a after the start of a transaction but before the transaction commits, various changes may be made in a database state
Explain weak and strong entity sets? Weak and Strong entity sets: A physically powerful entity set has a primary key. All tuples in the group are distinguishable through that k
Every School has many teachers and many students. Each student is assigned to one school and each teacher works for one school only. Each teacher teaches more than one subject but
what problems are raised by the database? why is it so controversial? why is data quality an issue?
Determine object representation As a designer, we must choose properly that when to use primitive types in representing objects and when to combine groups of related objects,
Can your organization scan large format documents? Yes, large format scanning used for such entities as city plans and blueprints is available. We selected scanners with the ab
Explain Dynamic Two-Phase Locking Here a transaction locks a data item instantly earlier than any operation is applied on the data item. After finishing all the operations on
create an er diagram for production management in film industry
what would go in order patient#, patient name, patien address, surgeon#, surgeon name, surgery date, surgery type, drug admin
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