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What is a disjoint less constraint?
Ans: It needs that an entity belongs to no much more than one level entity set.
Disjoint less constraint needs that an entity belongs to no more than one level entity set. (the meaning of Disjoint less constraint is that an entity can be a member of at most one of the subclasses of the specialization.)
What are the technique to define a schema completely ? A schema is completely define by DDL and DML query language.
Describe different steps of the object-oriented design process. The broad steps of the object-oriented design process are: a. Define context and modes of use of the system
Explain the difference between the three storage types - volatile, non volatile and stable. Ans: Volatile storage: if storage media loses data while power goes off,
cardnality ratio for humanresource mangement system
Define tuple variable Tuple variable is a type of variable whose domain is the set of all tuples.
What are the advantages of relational data model? Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer
What is conceptual schema? The schemas at the view level are known as subschema that describe dissimilar views of the database.
i would like to ask if you will do assignment of database number of words 1500 and how much
Explain Deadlock detection and recovery Deadlock Detection - A deadlock is said to take place when there is a circular chain of transaction, every waiting for the release of a
draw er diagram using entities crop,employee,department,plot,cultivation plan,machinery,seed,fertilizer
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