Database Systems(BCSE302L)
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------ hides information about the physical storage structures and focuses on describing data types, entities, relationships, etc.
Schema is also called extension.
To which of the data model type does the following demerit best attribute to:
Maintenance is difficult since changes
done in the database may want
you to do
changes in the entire database structure.
Sparse index items point to ---------
The total number of attributes present in the relation is called -------------
Defining the role of an User is an example of ----------
In ER diagram, place, person etc are denoted as -------------
Data is not physically stored in the order of the index. Instead, data is present in leaf nodes in the case of ---------------
Transitive dependency is eliminated as part of ---------
For a relation R (ABCD), if A -> B then AC -> BC. Which inference rule is this?
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