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Draw the precedence graph of the following schedule and determine whether the schedule is serializable. (Note that all instructions, except lock and unlock, are omitted. We assume
A student entity type has the following attributes,name..
(a) Why did SAP introduce the extended star schema?
What is hash file organization? What are the causes of bucket overflow within a hash file organization? What can be completed to decrease the occurrence of bucket overflow?
What are the advantages of DBMS ? 1. Centralized Management and Control - One of the major advantages of using a database system is in which the organization could exert, thr
Write short notes on relational model The relational model uses a collection of tables to show both data and the relationships between those data. The relational model is an ex
What is meant by heuristic optimisation?Discuss the major heuristics that are applied during query optimisation.
Write short notes on extension and intension? In any data model, it is significant to distinguish among the description of the database and the database itself the description
What exactly is the concept of Functional Dependencies? And how do we associate this concept with the logic of Super-keys, Candidate Keys, etc? Given Relation R(A,B,C,D,E) with de
How persistent programming languages differ from traditional programming languages? Database languages vary from traditional programming languages in that they directly manipul
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