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What is the State Machine Engine
The straightest approach to implement control is to have any way of explicitly representing and executing state machines. With the help of this approach, we can make outline of system where classes from the object model are defined, state machines from dynamic model are given and stubs of action routines can be created. A stub is minimal definition of a function of a subroutine without any internal code. By using of object oriented language, state machine mechanism can easily be created.
What is a candidate key? Minimal super keys are known as candidate keys.
Whta is the advantage of the database management approach? The advantage of the database management approach is data is integrated and can be accessed by multiple programs.
Explain Growing Phase of locking Growing Phase: In this phase the transaction can only obtain locks, but cannot release any lock. The transaction enters the growing phase as so
How the time stamps are implemented Use the value of the system clock as the time stamp. That is a transaction's time stamp is equivalent to the value of the clock when the tra
Draw entity relationship diagram for the following scenario. A university has many departments whereas each department belongs to that particular uni. That uni has also many bui
The entity type STUDENT has the following attributes: Student Name, Address, Phone, Age, Activity, and No of Years. Activity represents some campus-based student activity, and No o
Define reference file
What is inheritance? Inheritance is an object orientation concept that allows reusability of code / design. Basic sense of inheritance is that if one class is predefined than a
courier company er-diagram
Explain the disadvantages of file oriented approach? In the oriented approach Applications are designed in isolation. Design of application is optimized for one application. In
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