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How can we Classify the operations on classes This step fundamentally means all three models functional, object and dynamic (studied in last section) must be combined so that
What is meant by heuristic optimisation?Discuss the major heuristics that are applied during query optimisation.
List the drawbacks of relational database system A) Repetition of data B) Inability to s certain information.
Describe the various types of Online Analytical Processing (OLAP) tools and briefly discuss how the support common analytical operations.
(1) Insert into PERSON Violated constraint: - Key constraint Reason: - Primary key 1 already exists in PERSON. Dealing: - DBMS could ask the user to provide valid PER
I have been given 8 differebt data warehouseing failure case studies. I need to question 4 questions for each
Define the phases of two phase locking protocol Growing phase: a transaction may get locks but not release any lock. Shrinking phase: a transaction might be release locks bu
why data in an RDMS need to be normalised
What are the various forms of data transparency? a) fragmentation transparency b) replication transparency c) location transparency
#explain five disadvantages of a dbms..
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