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A distributed database management system (DDBMS) stores a logically related database over two or more physically distinct locations connected by a computer network. A DDBMS must perform all the operations that a usual DBMS must perform and additionally manage the distributed data that is stored in the multiple sites of the DDBMS. A DDBMS presents both advantages and disadvantages over a standard DBMS.Now, discuss the following points:In which type of application or situation would you consider using a distributed database instead of a centralized DBMS?When would you want to use a centralized database instead of a distributed database?
Suppose that the security model is required for protection of information in class. Using NSTISSC model, analyze each of cells (i.e. 27 cells related with McCumber model).
Select an appropriate statistical measure to compare consistency of sales. Make the calculations and write a report. In your calculations, include the mean sales for each salesperson.
Draw an inheritance hierarchy to represent a shoe object. The base class should have derived classes of Dress Shoes, Tennis Shoes and Boots.
Write the following procedures: woman_wants_to_enter, man_wants_to_enter, woman_leaves, man_leaves, using counters and sychronisation techniques to ensure that the correct behaviour will occur.
Design relation schemas for the entire database.
Express given five loosely described problems carefully in { Instance, Question } form as utilized in "Computers and Intractability". Determine that a list of n numbers has no duplicates.
First construct a Data Warehouse Bus Matrix to identify the company's business processes and any likely Data Marts and design the star schema for any Data Marts you have identified.
Develop a RDBMS (Relational Database Management System) in Python. The RDBMS should actually be written in Python, not just interface with some other DBMS. This system should track students: Personal Data, Schedules and Grades. The system should cont..
CAR (Serial-No, ModConsider the given relations for database which keeps track of auto sales in car dealership.
Suppose you have a table which contains 27,000 data records, and you have unclustered B+ Tree Index on the table.
In 500 words or less, trace the history of the development of databases beginning with pre-computer days to the present.
What criteria would you use in selecting a life-cycle model for the project?
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