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What is the meaning of Data Independence ?
How does a query tree represent a relational algebra expression? Ans: This includes transforming an initial expression (tree) into an equivalent expression (tree) that is
Components of database manager The above functions are reached by the database manager. The major elements of a database manager are: Authorisation control: This mod
Analyzing Association Traversal Till now, we have supposed that associations are bi-directional. But in the case of traversal, it is in only one direction in any application,
You are required to write a report which evaluates two of the following issues in relation to your case study database: a. Security issues b. Performance issues c. Backup
external and internal mapping with examples
WHAT IS MEANT BY E-R MODEL
#A multinational tour operator agency has gained new business growth in the North American market through the use of social media. Its operation has expanded by 50% within six mont
What are axioms? Axioms or rules of inference give a simpler technique for reasoning about
Define decision tree classifiers? As the name suggests decision tree classifiers use a tree: Every leaf node has an associated class, and every internal node has a predicate as
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