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What is vertical fragmentation?
Vertical fragmentation divides the relation by decomposing the scheme R of relation r.
What are the various symbols used to draw an E-R diagram (any 3)?
What are the advantages of Logical Databases? It offers a simple-to-use selection screens. You can change the pre-generated selection screen to your needs. It offers check f
need to get answer for questions 3&4 on this page in part 1
What functions does a data dictionary perform? In a (DBMS)data management system, the principal functions performed by the data dictionary are Management of data defini
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 sys
What are the requirements to ensure the objectives of file management principle is realized?
List the internal controls that should be in effect solely because a EDP system is employed, classifing them as (1) Those controls pertaining to input of information and (2) All ot
What is the way a particular application views the data from the database that the application uses? Sub schema is the way a particular application views the data from the data
What is normalization? It is a method of analysing the given relation schemas based on their Functional Dependencies (FDs) and primary key to attain the properties (1).Minim
Explain the Deferred Update The deferred update methods do not physically update the database on disk till after a transaction reaches its commit point; after that the updates
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