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System error:These contain errors in database system or the OS, example, deadlocks.Such errors are fairly hard to detect and need reprogramming the erroneous components of the system software.
Explain view in RDBMS? View - A view is a relation (virtual rather than base) and could be used in query expressions, which is, queries can be written by using the view as a re
What are called index-sequential files? The files that are ordered sequentially with a primary index on the search key are known as index-sequential files
Explain four causes for failures in data warehouse projects
Three Level Architecture of DBMS or Logical DBMS Architecture The logical architecture defines how data in the database is perceived by users. It is not deals with how the da
Define the terms 1) physical schema 2) logical schema. Physical schema: The physical schema explains the database design at the physical level, which is the lowest lev
Increases efficiency : Data is stored close to most often used site, therefore retrieval would be faster. Also, data that is not required by local applications is not stored, there
Find the names of all Albums that have more than 30 tracks. Result: (name: varchar(255))
What Command You Use What Day of the week were you born
Describe the development process of Object oriented methods Object oriented methods have roots which are strongly anchored back in the 60s, functional and structured methods we
Why did SAP introduce the extended star schema? Explain why it is reported to be better than the traditional schema model?
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