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Define object-relational systems?
Systems that give object-oriented extensions to relational systems are known as object-relational systems.
Define lock? Lock is the most common used to execute the requirement is to permit a transaction to access a data item only if it is currently holding a lock on that item.
Homework chapter 10 no 3
In E-R Diagram how derived attribute are represented ? In E-R Diagram By Dashed ellipse derived attribute are represented.
Question: (a) Why is it important to know the architecture rather than to start requirement capture when designing a large scale system? (b) Who are the different people in
What is meant by data-transfer rate? The data-transfer rate is the rate at which data can be retrieved from or kept to the disk.
What is the difference between link and reference? The fundamental difference between links and references is that links are symmetrical on the other hand references refer only
what is the relationship between receipt and owner entities in computer sales and service company
Indexed (Indexed Sequential) File Organisation It organises the file like a big dictionary, i.e., records are kept in order of the key but an index is stored which also allows
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
what problems are raised by the database? why is it so controversial? why is data quality an issue?
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