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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.
sy bcs project of hospital managment system
What is Interaction Diagram An interaction diagram shows an interaction, comprises of a set of objects and their relationships including the messages that may be dispatched be
An instance of relational schema R (A, B, C) has distinct values of A including NULL values. then A is a candidate key or not? If relational schema R (A, B, C) has distinct val
explain participation constraints with examples
Server Control It is usual to control access to the data via the front end application, for example by displaying data as ‘read only'. This part of the assignment illustrates ho
The ER diagram clearly showing the additional tables you have implemented. SQL table creation scripts for the tables you have set up. SQL scripts showing the sample data you
as a customer service employee, explain five measures you would recommend a displeased student to patronise a school canteen
With the help of a suitable diagram gives module wise explanation of system architecture of DBMS.on..
Define query optimization. Query optimization refers to the process of search the lowest -cost method of evaluating a given query.
What is conceptual model ? A conceptual model is a independent of both hardware and software.
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