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Describe disk manager and their work?
Disk Manager: Responsible for fetching data regulated through file Manager from disk storage within Main memory and deciding what data to cache in memory. It is a part of the O.S. of host computer and all physical input and output operations are performed through it. It gives disk abstraction to file Manager s.t. file Manager need not be concerned along with the physical features of the underlying storage media.
What is a shadow copy scheme? It is simple, but efficient, scheme known as the shadow copy schemes. It is based on making copies of the database called shadow copies that singl
am looking for assignment helper for dbms
1. Design the logic, using a looping structure, for a program that outputs every even number from 1 through 25 along with its square and cube. 2. Mr. Sanchez owns 12 apartme
what is cascading? what is rollback cascading? please explain in detail
What is OLAP? OnLine Analytical Processing (OLAP) is a Business Intelligence (BI) reporting system. OLAP gives the user with the capability to sum, count, average and do other
What is Asterisk in SQL? Asterisk (*): In SQL, the columns for all the tables and views in the FROM clause will be displayed.
Eliminate Repeating Groups The problem is, "Find out the list of employees, who knows DB2". For this problem we require to perform an awkward scan of the list looking for re
What are the four main characteristics of the database approach? The four major characteristics of the database approach are: 1. Self-describing nature of a database system. 2.
What are the storage types? The storage types are: a) Volatile storage b) Nonvolatile storage
What is an object design? Object design is a very interactive method, which decides the relationship among objects, classifies operations on classes, determines overall system
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