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Convert the following ER - diagram (Entity Relationship Diagram) into a relational database (the primary keys are underlined):
Ans: The relational database schema for the following ER diagram is like this:
A (a1, b1, a2, a3)
B (b1, b2, b3, b4)
C (c1, c2)
D (b1, c1, r21)
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Define the Canonical cover Ans: A canonical cover F c for F is a set of dependencies like F logically implies all dependencies in F c , and F c logically entails all dependen
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compare the features of oracle RDBMS with MySQL and Microsoft SQL server
What sorts of tables one can se in designing the hierarchy of a LDB? Tables, which are having Foreign Key relations.
In E-R diagram how generalization is represented? in E-R diagram generalization is represented by Triangle shape.
What are the difference between clustered and a non-clustered index? A clustered index is a special type of index that reorders the way records in the table are physically stor
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