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Question: A DBMS built for Online Transaction Processing (OLTP) is generally regarded as unsuitable for data warehousing. Each system is designed with a different set of requir
Draw the precedence graph of the following schedule and determine whether the schedule is serializable. (Note that all instructions, except lock and unlock, are omitted. We assume
What is a primary key? Primary key is chosen by the database designer as the principal means of identifying an entity in the entity set.
Write short notes on extension and intension? In any data model, it is significant to distinguish among the description of the database and the database itself the description
job scheduling for different cubes
How does Tuple-oriented relational calculus vary from domain-oriented relational calculus? The tuple-oriented calculus uses a tuple variables i.e., variable whose only allowed
What is conceptual schema? The schemas at the view level are known as subschema that describe dissimilar views of the database.
Logical Operators Rules of Precedence: Order evaluated Operator 1 All comparison operators 2
Example -Find the employee name, salary, department number and average salary of his/her department, for those employees whose salary is more than the average salary of that depart
what is cascading? what is rollback cascading? please explain in detail
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