Differentiate between conventional database and real time database

Differentiate between conventional database and real time database - difference between real-time database and conventional database.

Difference between conventional and real-time databases

	Conventional Database	Real-Time Database
Data
Nature of Data	Persistent data (values do not become obsolete)	Persistent + Temporal data (values may become obsolete if deadline is missed)
Data items	Static data items	Dynamic data items (Data items that reflect the state of the environment) Static data items
Data validity	Consistent transactions maintain valid data in databases	Data validity is highly depend on the time
Transactions
Correctness	Logically correct and consistent	Logically correct and consistent Approximately correct Time correctness
Timing constraints	No timing constraints	Timing constraints to be followed
Consistency	Logical Consistency	Logical consistency External consistency Temporal consistency
Response time	To be minimized to handle more transactions.	Response time requirements come from external world
ACID properties	Must be satisfied for every transaction	May be relaxed in few cases
Performance
Performance metric	Number of transactions completed per unit time	Number of transactions missing their deadlines per unit time

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