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What is relationship instance ?
Relationship Instance - A relationship is a relation between two or more entities. An instance of relationship set is a set of relationships.
Drawbacks of Database systems ?
Give an example of Object Representation For illustration, consider the implementation of a social security number within an employee object that is shown in Figure. The soci
Question 1 Draw a Data Flow Diagram for a University scenario Question 2 Discuss the following with suitable examples Relational Algebra Operators Database Pla
Question 1 Explain ER model Question 2 What are the characteristics of a computer provided information? Question 3 What are facts and guidelines to be considered when se
2NF Normal Form : A relation schema process R is in 2NF if it is in 1NF and each non-prime attribute A in R is fully functionally related on primary key. Second normal form (2N
Define Thomas write rule Thomas' write rule: The Thomas' write rule is a modification of timestamp-ordering protocol for concurrency control. Assume that transaction T i issue
Performance of Various Concurrency Control Mechanisms
please i request for your assistance in developing a case-based online phone repair
What are the properties of transaction? There are three properties of transactions :- A) Atomicity B) Consistency C) Isolation
Describe how you can simplify Operations. To simplify operation, one should use inheritance, where possible to use, to reduce the quantity of distinct operations. Introduce new
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