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Illustrate some notations of object modeling notations
A classifier is a mechanism which describes behavioural and structural features. In UML significant classifiers are class, signals, data type, interface, use case, nodes, components, and subsystems.
A class is a description of a set of objects which share same attribute, semantics, operations, and relationships. In UML, it is represented by a rectangle.
An attribute is a named feature of a class which describes a range of values that instances of property may hold. In UML, they are listed in the compartment just below the name of that class.
An operation is implementation of a service which can be requested from any object of class to affect behaviour. In UML, they are listed in the compartment just below to that of the class attribute.
Advantages on electronic payment system It gives good security schemes. Four necessary security requirements for safe e-payments are Authentication, Encryption, Integrity,
Handshake control of data transfer during an input operation: . Handshake control of data transfer during an output operation o Interface to CPU and Memory o
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We download data which arrives to me in a column. I need to use it in a complex sheet that requires data in a row. How can we convert the column data into row data? Ans) H
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Q. How to Change Default Drive in dos? To modify a default drive type the new drive letter followed by colon (:) and then press Enter. For example, if the default drive is A a
Name the switching schemes used in a digital exchange? The several switching systems used are: 1. Strowger Switching System 2. Cross bar Switching. 3. Electronic Swit
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