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Give the reasons for allowing concurrency? The reasons for allowing concurrency is if the transactions run serially, a short transaction might have to wait for a preceding long
What are the benefits of prepared statements and place holders? Parameter binding operations automatically handle escaping of characters Encourage Statement reuse
What is called query processing? Query processing refers to the range of activities included in extracting data from a database.
compare the features of oracle RDBMS with MySQL and Microsoft SQL server
coventions for displaying an ER schema as ER diagram
Which are the two ways in which entities can participate in a relationship? Total and partial are the two ways in which entities can participate in a relationship
why data in an RDMS need to be normalised
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
crete a data base relationship model Entity: Students; Professors; Dormitories buildings; Attributes of students: Name; Address; Dorm;
We define a view in SQL through using the create view command. To describe a view, we must provide the view a name and must state the query in which computers the view. The form of
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