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Fundamentals of Database Management 1. Explain the concept of Foreign Key. How a foreign key differs from a Primary Key? Can the Foreign Key accept nulls? 2. With a necess
What is conceptual schema? The schemas at the view level are known as subschema that describe dissimilar views of the database.
what are the main characteristics of database
About Attribute inheritance
Express types of information available in MySQL? Information as regards the result of queries: This includes number of records affected by any SELECT or UPDATE or DELETE st
What are the costs to be considered when a transaction has to be rolled back when recovering from deadlock? Ans: A few transaction will must rolled back (made a victim)
What is first normal form? The domain of attribute must contain only atomic (simple, indivisible) values.
Hi I have got an assignment for making an er diagram for market management software can any budy help me?
Define Shared locks? Ans: Shared lock: Throughout concurrent execution of transactions, earlier than a transaction can access a data item, it has to obtain a lock on it. Now he
State the Steps of Object Design Object design is a very iterative process in which various classes, relationships among objects are added when you move from one level to
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