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Every simple attribute of an entity type have a possible set of values that can be attached to it. This is known as the domain of an attribute. An attribute cannot have a value outside this domain.
EXAMPLE- for PERSON entity PERSON_ID has a specific domain, integer values say from 1 to 100.
Database Recovery And Security Introduction In this part we will introduce two main issues relating to database management systems. A computer system suffers from dissi
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how to write tables and drow E-R diagrams for hosiptal management system and how to normalize and cardinalities?
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For each 1: n relationship type R involving two entities E1 and E2, we recognize the entity type (say E1) at the n-side of the relationship type R and contain primary key of the en
What are the drawbacks of File Oriented System in details?
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