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A set of possible data values is called?
A set of possible data values is called as domain.
Analyzing Association Traversal Till now, we have supposed that associations are bi-directional. But in the case of traversal, it is in only one direction in any application,
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
When It is better to use files than a DBMS? It is better to use files than a DBMS when Multiple users wish to access the data.
Primary Key The primary key is the candidate key that is selected by the database designer as the principal denotes of identifying entities within an entity set. The left candi
Use Delegation to Share Implementation The delegation " Delegation comprises of catching an operation on one object and sending it to other object which is part, or related to
Write a query to define tables students and teachers as sub tables of people? Create table students of student under people Create table teachers of teacher under people
why we fregment at all?
Attributes that are directly kept in the data base. For example, 'Birth date' attribute of a person. Derived Attributes that are not stored directly but can be derived
Why did SAP introduce the extended star schema? Explain why it is reported to be better than the traditional schema model?
Write short notes on domain relational calculus The domain relational calculus uses domain variables that take on values from an attribute domain rather than values for whole t
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