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What is called query processing?
Query processing refers to the range of activities included in extracting data from a database.
define lock conversion
What is a PROJECT operation? The project operation is a unary operation that returns its argument relation with particular attributes left out. Projection is shown by pie (π).
how oracle can be used
What does data dictionary is a special file contains ? The data dictionary is a special file contain The name of all fields in all files.The width of all fields in all files an
define locking in simple language and decribed it
define anomalies and different types of anomalies with example
As with other software, databases can potentially be used for unethical purposes. As a database developer, and a consumer, you should recognize database misuse, and how it may affe
While sorting field groups we cannot use more than one key field False.
Draw an EER diagram that captures the "is-a" hierarchy of students in another simple database. The database captures both the "basic" information (say, student ID and student name)
what is lossless & dependency preserving decomposition ?
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