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multidimensional data model
Explain about database system structure? Storage manager Authorization and integrity manager Transaction manager File manager Buffer manager Storage manager
Determine Which is not a consequence of concurrent operations? Ans: Update anomaly.
Give the levels of data abstraction? There are three levels of Data Abstraction a) Physical level b) logical level c) view level
What is an Operand? The data on which the operation is to be performed is known as an Operand
What is schema
Describe log based recovery The most usably structure for recording data base modification is the LOG the log is a sequence of log records recording all the update activities i
assume we have the following apllicationthat model sccer team the games they play and the players inv each teamin the design we want to capture
What are multiple inheritances? Multiple inheritances allow a class to inherit variables and methods from many super classes.
Example :; transfers transfer_amount from x's account to y's account ; Supposes x&y both accounts exist TRANSACTION (x, y, transfer_amount) Start transaction IF X AND Y
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