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Concurrency issues Data integrity: Threads accessing same object need to be synchronized, such as: banking account. Deadlock: One or more threads in system are perman
external and internal mapping with examples
The physical location of a record is determined by which mathematical formula that transforms a file key into a record location? The physical location of a record is determined
WHAT IS SQL
Describe substring comparison in SQL. For the relation Person (name, address), write a SQL query that retrieves the names of people whose name starts along with ‘A' and address co
under what condition log based recovery is feasible?
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
as a customer service employee, explain five measures you would recommend a displeased student to patronise a school canteen
sql is relationally complete-justify
what problems are raised by the database? why is it so controversial? why is data quality an issue?
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