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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)
data models are being replaced over years. Reasons and why does that happen?
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Construct a clean ans concise ER diagram for the database indicating the cardinality mapping for Employee management syatem
write-set(T): Each data items that are written by a transaction T
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Physical Records These are the records that are stored in the secondary storage devices. For the database relation, physical records are the group of fields kept in adjacent me
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