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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.
Describe the objective of Structural Diagrams The main objective of structural diagram is to visualize, construct, specify and document static aspects of a system. Their eleme
Order by clause By using this rows can be sorted It is used in the last portion of select statement By default it gets ascending order DESC: is used
What is a view? Make a view of EMP table named DEPT 20, to display the employees in department 20 and their annual salary. Ans: View is a virtual table that does not consist
Write short notes on domain relational calculus The domain relational calculus uses domain variables that take on values from an attribute domain rather than values for whole
A database is a set of data. But, is the data kept in a database trustworthy? To answer that query we must first answer the question. What is integrity? Integrity simply means t
Construct an ER diagram for a hospital along with a set of patients and a set of medical doctors Associate with every patient a log of the several tests and examinations conducted.
Prepare a gantt chart for the stock control project: Scenario Lucas-TVS is the Leader in Auto Electricals in India today with 50 years experience in desig
#A multinational tour operator agency has gained new business growth in the North American market through the use of social media. Its operation has expanded by 50% within six mont
What are the function of DBA?
State as Location within a Program In this traditional approach, location of control inside a program totally defines the program state. Any finite state machine may be implem
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