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Why are cursors necessary in embedded SQL?
A cursor is an object used to store the output of a query for row-by-row processing through the application programs. SQL statements operate on a set of data and return a set of data. Instead, host language programs operate on a row at a time.
The cursors are used to navigate by a set of rows returned through an embedded SQL SELECT statement. A cursor could be compared to a pointer.
compare the features of oracle RDBMS with MySQL and Microsoft SQL server
Performance of Various Concurrency Control Mechanisms
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What is first normal form? The domain of attribute must contain only atomic (simple, indivisible) values.
Write short notes on transaction state? A transaction may not always complete its implementation successfully such a transaction is termed aborted A transaction must be in o
Meaningful use refers to the use of certified EHR technology to "enhance quality, efficiency, and reduce health disparities
Eliminate Columns Not Dependent On Key The Employee Relation satisfies - First normal form - As it has no repeating groups. Second normal form - As it do not have multi-a
What is a hash index? A hash index organizes the search keys, with their associated pointers, into a hash file structure.
Explain the term- Data Flows Data Flows: A data flow connects output of an object or process to input of another process or object. It represents an in-between data value wit
What is an ERD?
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