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Which database object does not physically exist?
A view database object does not physically exist.
1. Will you advise that your organization uses open source software and why? 2. Why is it important for business managers to have a basic understanding of the software development
List the table modification commands in SQL? A) Deletion B) Updates C) Insertion D) Update of a view
What is Conceptual Schema? Conceptual Schema - Conceptual schema elaborates the structure of the overall database for a community of users. It hides the details of physical sto
Explain what is Aggregation ? Aggregation: This is used whenever we intend to show a relationship between an entity and the relationship. There is no provision for this in th
Which method of access uses key transformation? A Hash method of access uses key transformation.
Define query language? A query is a statement requesting the retrieval of information. The portion of DML that includes information retrieval is known as a query language.
Define access time. Access time is the time from when a read or write request is issued to when data transfer starts.
How many levels can be viewed in Architecture of the database ? Architecture of the database can be viewed as three levels.
How is concurrency identified? Concurrency in objects can be identified by the way they alter their state. Current objects can change their state independently. Aggregation imp
What is a Name? A user-supplied name is used for identity. This form of identity is used for files in file systems. The user gives every file a name that uniquely identifies it
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