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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)
Express the following queries in SQL: (a) Write the SQL code that will create ALL the four tables given in the appendix. Your answer should not contain the primary key and
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In which form of relational database developer refers to a record? In a tuple form of relational database developer refers to a record.
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What is conceptual schema? The schemas at the view level are known as subschema that describe dissimilar views of the database.
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