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The Internal or Physical Level The collection of files permanently stored on secondary storage devices is called as the physical database. The internal or physical level is t
explain the mapping constraints
(a) Why did SAP introduce the extended star schema?
external and internal mapping with examples
Super keys of a relation can have extra attributes. Candidate keys are minimal super key, i.e. such a key have no extraneous attribute. An attribute is known as extraneous if even
Secondary Indexes Let consider the student database and its clustering index and primary (only one will be applicable at a time). Now consider the state when the database is to
In this practical assignment, we will run through a complete database application development cycle, starting with the schema design, from an initial data import to database applic
Many-to-many : Entities in A and B are related with any number of entities from each other. Example: Taught_by Relationship among course and faculty. One faculty member ca
give some example real-life situations where DBMS are most suiitabe
Define an operator that a Relational Algebra does not have Ans: Relational Algebra does not have Aggregation operators.
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