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What is meant by object identifiers?
Object-oriented systems use an object identifier to recognize objects. Object identifiers are unique: that is every object has a single identifier, and no two objects have the similar identifier.
Explain the challenges before an E-business management.
Illustrate the Deployment Diagram A deployment diagram shows all nodes on network, their processor execution and interconnections. In a dynamic model, this is used to represen
Preliminary entities and attributes of human resourse management database management system
The natural join is equal to which product? The natural join is equal to Combination of projection and Cartesian product
#question.what is mapping constraints and types?.
Define physical and logical data independence. How does this architecture help in achieving these? Data independence entails that change in one view must not need a change in t
Which model is record based logical model? Network Modelis basically known as record based logical model.
Explain the concept of deadlock Yes. It can direct to deadlock. Suppose that a batch of frames arrived correctly and were accepted. Then receiver will advance its window. Now s
Question 1: (a) Planning and management of ICT projects have a very poor record in developing countries. Briefly explain five critical success factors for correct implementa
Write short notes on relational model The relational model uses a collection of tables to show both data and the relationships between those data. The relational mo
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