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To delete a particular column in a relation which command is used ? To delete a particular column in a relation ALTER command is used.
What is a heterogeneous distributed database? In a heterogeneous distributed database, dissimilar sites may use different schemas, and dissimilar dbms s/w. The sites may not be
Selective replication: This is a combination of generating small fragments of relation and replicating them rather than a entire relation. The data should be fragmented on require
How to use Oracle
, write the relational schema, and draw the new dependency diagrams. Identify the normal forms for each table structure you created
Question (a) Concurrent access to data from a database is a normal part of application program usage. Describe three approaches to concurrency control (b) Distinguish among
Multilevel Indexing Scheme Consider the indexing scheme where the address of the block is consider in the index for each record, for a little file, this index would be little a
The database will enable college administrators the ability to track students initial major. This will help college officials decide how best to prepare students for their goals an
Law Associates is a large legal practice based in Sydney. You have been asked to design a data model for the practice based upon the following specification: The practice employs
give me a diagram about physical or internal level
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