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Question:
(a) What are the challenges in the development of Large Scale Distributed Real Systems?
(b) What is backward engineering and forward engineering in a design package? Give one disadvantage of backward engineering.
(c) Describe in what two situations data replication may be applied.
(d) What is the implication of data replication?
(e) Will data replication be used in a large scale system?
Explain Stand Alone Query Language in details? Stand alone Query Language - The query language that can be used interactively is known as stand alone query language. It does no
Creating views with Replace option : This option is used to alter the definition of the view without recreating and dropping it or regranting object privileges previously granted o
Fragmentation: It is definite as partitioning of a relation into various fragments.Every fragment can be stored at a dissimilar site.
Describe multi key files
A relation has: Relational Schema Relation instance Relational Schema: A relational schema shows the relation's name, its attributes and the domain of every a
Design a gennalization and specialization hierarchy for an automobile sales company
WHY SHOULD NULL IN A RELATION BE AVOID AS possible?
Describe the algorithm for updating indices for a single level index when a record is (i) Inserted (ii) deleted What will be the modification if there are multilevel in
In E-R Diagram how derived attribute are represented ? In E-R Diagram By Dashed ellipse derived attribute are represented.
The Database Approach In order to overcome the limits of a file system, a new approach was needed. Hence a database approach emerged. A database is a persistent collection of
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