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Discuss the term- Design Optimization
We have seen various ways of representing the objects.The fundamental design model uses analysis model as the framework for implementation. The analysis model captures logical information regarding system. To get better result, design model shall contain details to support efficient information access. The inefficient, but semantically-correct analysis model could be optimized to make implementation more fruitful, but an optimized system is more difficult to understand and likely to be reusable in any other context. For the design optimization, as a designer, we must strike an appropriate balance between both efficiency and clarity.
During design optimization as a designer we must keep following points in our mind:
Relational and E-R Model There are three types of constraints on relational database that have: DOMAIN CONSTRAINT PRIMARY KEY CONSTRAINT INTEGRITY CONSTRAINT
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FDs in Relationships: Enrols Relationship: None as it is many to many Teaches Relationship : Course code → Instructor Instructor → Course code The next question is:
Question 1 Explain the functions of the following Storage Manager Buffer Manager Transaction Manager 2 Discuss about system catalog in a relational DBMS 3
If the deletion violates referential integrity constraint, then three alternatives are available: Default option: - refuse the deletion. It is the job of the DBMS to describ
define normalisation and functional dependency
why older data models are being replaced by new data models.
Give some encryption techniques? A) DES B) AES C) Public key encryption
Describe the shadow paging technique.
What is multiple relationship ?
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