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Explain data abstraction?
Data abstraction Data abstraction is a methodology in which enables us to isolate how a compound data object is utilized from the details of how it is constructed from more primitive data objects.
What is a view in SQL? When can views be updated? A view is a virtual table which consists of columns from one or more tables. Through it is same to a table; it is stored in
Which two tools are used to administer users for Active Directory?
What are the three data anomalies that are likely to occur as a result of data redundancy? Can data redundancy be completely eliminated in database approach? Why or why not? A
Attribute Preservation This is a easy and obvious necessity that includes preserving all the attributes that were there in the relation that is being decomposed.
Describe file organisation? A file is organized logically as a sequence of records. These records are mapped onto disk blocks. A) Fixed-Length Records Type deposit=record
Why is need for the multiple access paths?
How many levels can be viewed in Architecture of the database ? Architecture of the database can be viewed as three levels.
explain the level architectures of the database management system
List the table modification commands in SQL? A) Deletion B) Updates C) Insertion D) Update of a view
Hierarchical model is also known by? A hierarchical model is also known as a Tree structure.
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