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List the drawbacks of relational database system
A) Repetition of data
B) Inability to s certain information.
A database administrator''s responsibilities and data contents
Speedup Query Processing: A query that includes data at various sites can be split into sub-queries. These sub- queries can be implemented in parallel by various sites. Such parall
Distributed And Client Server Databases Introduction This unit tells the distributed database systems which are primarily relational and one important execution model: the
What is association? Give an example of association Association is used for establishing relationships among classes. Association describe links among/between classes. For exa
What are temporary tables? Temporary tables exist solely for a particular session or whose data persists for the duration of the transaction.
Outer Join: The use of Outer Join is that it still joins those tuples that do not have matching values in common columns are also contained in the result table. Outer join places
aggregation
Explain Candidate Key and Super Key A super key is a set of one or more than attributes that, taken collectively, permits us to identify uniquely a tuple in the relation. Wher
er diagtram for icici
Define Serializable schedule Serializable schedule: An interleaved schedule of much more than one transaction is known as a serializable schedule, if it is equal to some serial
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