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Question:
a) There are three concurrency problems, i.e. three types of potential mistake which could occur if concurrency control is not properly enforced in the database system. Briefly explain each of these concurrency problems.
(b) Locking can be used to solve the three concurrency problems, but it can also produce the problem of deadlock. What is deadlock? Briefly explain how the problem of deadlock can be handled.
Normalize the following table upto and including the 3NF. Submit a 1 page printout of only the final set of normalized tables in Data Architect. Just use Data Architect to do the t
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what is cascading? what is rollback cascading? please explain in detail
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
What is the archtetype/instance pattern? The archetype/instance pattern happens when one entity tracks occurrences of another entity. A common example is the relationship among
Process of normalization is the integral part of designing a database. Justify this statement with suitable database design
What is catalog in DBMS? Catalog - A relational DBMS maintains information about every table and index in which it contains. A catalog is a collection of special tables that st
Define hot swapping? Hot swapping permits the removal of faulty disks and changes it by new ones without turning power off. Hot swapping decreases the mean time to repair.
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Explain heap file with advantages? Heap File is an unordered set or a group of records, stored on a set of pages. This class gives basic support for inserting, updating, select
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