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Define blocks?
The database system resides eternally on non-volatile storage, and is into fixed-length storage units known as blocks.
explain in detail about time stamp orderting/
employee(empid,empname,dept,telno,mobno, add,sssno,tinno,WEdates,WEcomp,WEadd,WEpos,WEres) this is a employee record which is need to be normalize.the WE means work experience
external and internal mapping with examples
Views A view is like a window by which data from tables can be changed or viewed. The table on which a view is based is known as Base table. The view is stored as a SELECT stat
QUESTION (a) Consider a car database consisting of car model, car make, car origin, Engine capacity, color, cost.
During the deletion of a tuple two cases can happen: Deletion of tuple in relation having the foreign key: In this type of case simply delete the desired tuple. For example, in
Critically explained the benefits and limitations of different database technologies with proper examples
Explain Composite attribute in SQL ? Composite attribute: A composite attribute has many components, each of that is atomic or composite.
What are the typical phases of query processing
Strong entity set and weak entity set? Strong entity set and weak entity set: A strong entity set has a primary key. All tuples in the set are distinguishable through that key.
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