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What is a disjoint less constraint?
Ans: It needs that an entity belongs to no much more than one level entity set.
Disjoint less constraint needs that an entity belongs to no more than one level entity set. (the meaning of Disjoint less constraint is that an entity can be a member of at most one of the subclasses of the specialization.)
Define an operator that a Relational Algebra does not have Ans: Relational Algebra does not have Aggregation operators.
Question A What is operational intelligence? Question B What is Business Intelligence? Explain the components of BI architecture Question C Differentiate between databas
What are two special events? The two special events are as "entry" and "exit". Any action which is marked as linked to entry event is executed whenever given state is entered v
does tables are called relations
Problem: A DBMS built for Online Transaction Processing (OLTP) is usually regarded as unsuitable for data warehousing. Each system is designed with a different set of requireme
Give short note on the following terms:Dirty pages and ETL a.) Dirty pages. These are buffer pages which comprise modifications which haven't been written to disk. b.
About Attribute inheritance
Explain Deadlock detection and recovery Deadlock Detection - A deadlock is said to take place when there is a circular chain of transaction, every waiting for the release of a
write a short note on participation role? Participation role: roles are indicating in E-R diagram by labelling the lines that connect diamonds to rectangles.
Consider student (std_id, std_name, date_of_birth, phone, dept_name). Put the data for a student with student id200, name arun, birth date 1 February, 1985, phone number (01110 328
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