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What is abstraction?
Abstraction in the object orientation is a idea that provide opportunity to express necessary properties of object without providing much details of the implementation of these properties.
How to reduce data redundency
E-R Model This data model is based on real world that consists of basic objects named entities and of relationship among these objects. Entities are illustrated in a database
What are the aggregate objects in the data dictionary? Views Match codes Lock objects.
Chapter 10a review questions
Waterfall model is the linear model. The process is completed by step by step. We couldn't stop in between of the process. Prototype model: after get the model by low cost budget o
Explain Deadlock detection and recovery Deadlock Detection - A deadlock is said to take place when there is a circular chain of transaction, every waiting for the release of a
Research Value: 7% Due Date: 17-Sep-2018 Return Date: 11-Oct-2018 Length: 700 words Submission method options: Alternative submission method Task back to top You are required to
In E-R Diagram how relationship type is represented ? In E-R Diagram relationship type is represented as a Diamond.
Describe the shadow paging technique.
Improved availability: The data in a distributed system may be replicated so that it is at more than one site. Thus, the failure of a node or a communication link does not necessar
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