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Drawbacks of Database systems ?
Implementation of association as an object Implement as a separate association object, independent of either class, as in Figure. An association object is a group of pairs
What is horizontal fragmentation? Horizontal fragmentation divides the relation by assuming every tuple of r to one or more fragments
In which form of relational database developer refers to a record? In a tuple form of relational database developer refers to a record.
examples of fields in a database
Inconsistent Analysis : The problem as given with transactions T1 and T2 where two transactions interleave to make incorrect result during an analysis by Audit is the instance of s
The indices are accumulated in the index files. The data is accumulated in the data files. Indices give fast access to data items. For example, a book database may be managed in th
What are the key features of Oracle? Key features of Oracle are as follows: • Read Consistency • Concurrency • Locking Mechanisms • Quiesce Database • RAC • Portability
In case of entity integrity, the primary key may be declared? In a case of entity integrity primary key may be not Null.
In an E-R diagram an entity set is represent by? In an E-R digram entity set is represted by rectangle.
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