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The data of a view is not physically stored, but derived from one or more tables. True the data of a view is not physically stored
In a relational model how relations are termed? In a relational model, relations are termed as tables. (The term ‘relation’ is the technical name of the ‘table’ in RDBMS)
What are multiple inheritances? Multiple inheritances allow a class to inherit variables and methods from many super classes.
Define the Query optimisation The query parser commonly generates a standard initial tree to correspond to an SQL query, with no doing any optimization. Such type of a canonica
What are the advantages of object oriented databases in comparison with others? Why it is still not widely used? Object oriented designs are coherent, efficient and less prone
Design Of Distributed Databases: The distributed databases are mainly relational at local level. So a local database schema is the similar as that of a centralised database design
Differance between DDL and SDL? DDL and SDL - The data definition language (DDL) is used through DBA and database designers to describe internal schema, conceptual schema, and
Determine Which is not a consequence of concurrent operations? Ans: Update anomaly.
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In a Hierarchical model of data records are organized ? In the hierarchical model of data records are organized as Tree structure.
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