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State the Object Design for Processing
The object design phase comes after analysis and system design phase. The object design phase includes implementation details like as internal data structures and algorithms to implement operations, restructuring classes for efficiency, implementation of control, implementation of associations and packaging into the physical modules. Object design extends analysis.
Why older data models are being replaced by new data modelling 100 words accepted#
Discuss deferred update technique of recovery. What are the advantages? Ans: The deferred update methods do not physically update the database on disk till after a transact
Define blocks? The database system resides eternally on non-volatile storage, and is into fixed-length storage units known as blocks.
Find the names of all Albums that have more than 30 tracks. Result: (name: varchar(255))
Project Description: The work is about founding the best skilled person for the job. I will give you the job description. Skills required are Data Entry, Database Administrat
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Define weak and strong entity sets? Weak entity set: entity set that do not have key attribute of their own are known as weak entity sets. Strong entity set
Explain I command in QBE ? I : It is the command in QBE that is used to insert tuple (s) into the database
Derived horizontal fragmentation: Some applications may include a join of two or more relations. If the relations are stored at dissimilar locations, there may be a major overhead
Creating views with Read only option : In the view definition this option is used to make sure that no DML operations can be done on the view.
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