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Why did SAP introduce the extended star schema? Explain why it is reported to be better than the traditional schema model?
Describe the iterative and incremental life cycle For an iterative and incremental life cycle, two criteria are process and time. The main components of showing a project devel
Explain group By clause in SQL? Group By clause in SQL: The GROUP BY clause can be used in a SELECT statement to collect data across multiple records and group the results thro
What is Data Storage? The storage structures and access methods used by database system are specified by a set of explanation in a special type of DDL called data storage-defin
Define Partial Key and Primary Key A partial key, also known as discriminator, is the set of attributes which can uniquely identify weak entities that are related to similar o
Multi-list file Organisation Multi-list file organisation is a multi-index linked file organisation. A linked file organisation is a logical organisation where physical orderin
write on the various type of relationalkey
what is Mapping Constraints? with examples
Where does view definition stored? A view definition is permanently stored as part of the database.
explain exhaustively the problems associated with ER diagrams. include illustrations in your answer
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