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What are temporary tables? Temporary tables exist solely for a particular session or whose data persists for the duration of the transaction.
Explain Alternate key? Alternate Key - All the candidate keys except primary key are known as alternate keys.
Define an operator that a Relational Algebra does not have Ans: Relational Algebra does not have Aggregation operators.
System Design: An Object Oriented Approach Any software systems always try to change and evolve as technology and business rules evolve. The development of information systems
What is schema
What are the disadvantages of file processing system? The drawbacks of file processing systems are a) Data redundancy and inconsistency b) Complexity in accessing data
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
what do you understand by enhanced entity-relationship
why older data models are being replaced by new data models.
explain normalisation
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