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Probelm:
(a) A distributed database (DDB) is a collection of multiple, logically interrelated databases which are physically distributed over a computer network"
(i) Give advantages of a Distributed Database as compared to a centralised database.
(ii) Differentiate between a Heterogeneous DDB and Homogeneous DDB and describe under what circumstances would such systems generally arise?
(iii) Show the advantages of having data replicated at various sites.
How many levels can be viewed in Architecture of the database ? Architecture of the database can be viewed as three levels.
I have a homework assignment due today by midnight. I need help understanding databasse normalization and determining the type of form violation & how to fix the violation.
how to construct labelled precedence graph for view serialiability.please explain insteps with one solved examples
Speedup Query Processing: A query that includes data at various sites can be split into sub-queries. These sub- queries can be implemented in parallel by various sites. Such parall
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Which operator is used to compare a value to a list of literals values that have been specified? BETWEEN operator is used to compare a value to a list of literals values that h
Describe the four main ways of optimising disk block access. Ans: a. Disk b. Non-volatile writes buffers c. File organization (Clustering) d. Log-based file system
What are the Objectives of object design After going through this unit, you could be able to: explain steps of object design; discuss algorithms that reduce costs;
Example: RELATIONAL SCHEMA for PERSON: PERSON (PERSON_ID: integer, NAME: string, AGE: integer, ADDRESS: String) RELATION INSTANCE In this instance, m = 3 and n = 4
What is the function of IO/M signal in the 8085? It is a status signal. It is used to differentiate among memory locations and I/O operations. When this signal is low (IO/M = 0
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