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Give a sample of the Dynamic Model.
The sample of dynamic model is given below:
Dynamic model for the car:
Brake and Accelerator Brake or Applies Accelerator
Accelerator Applies an Accelerator
Brake Applies the Brake
off Put off car
on Put on car
press acc is a function
rel accl
press brak
rel brak
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
Record based Logical Models: Use records as the key data representation components Examples: Relational Model: It shows data as well as relationship between data in the form
What is the need for triggers? Triggers are useful mechanisms for alerting humans or for starting particular tasks automatically when particular conditions are met.
Saving Derived Attributes to Avoid Re-computation Data that is derived from other data should be stored in the computed form to avoid re-computation. For this, we could define
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.
Why older data models are being replaced by new data modelling 100 words accepted#
(A) For the relation; CarSales (RegNo, BuyerName, Address, SalesPerson, Make, Model, Commission) The following functional dependences hold, RegNo _ID à Make, Model Reg
What are metrics for choosing the best algorithm? Matrices for choosing the best algorithms are as below: Computational complexity Ease of understand ability and im
What is NULL? Simply NULL means not in value.
Question : (a) Differentiate between database integrity and database security (b) Database security involves measures to avoid loss of privacy and loss of confidentiality. D
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