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ER Model (II) 1 Roadmap of This Lecture Weak Entity Sets Extended ER Features Reduction to Relation Schemas Database Design UML* 2 Weak Entity Sets An entity set that does not have a primary key is
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How to fill out e-r model ii:
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Understand the purpose: Before filling out the e-r model ii, it is important to have a clear understanding of the purpose and goals of the model. This model is used to represent the relationships between entities in a database system.
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Identify entities: Start by identifying the entities that need to be represented in the model. Entities can be people, objects, or concepts that have a distinct existence and can be described using attributes.
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Determine relationships: Once the entities are identified, determine the relationships between them. Relationships define how the entities are connected and can be one-to-one, one-to-many, or many-to-many.
04
Specify attributes: For each entity, specify the attributes or characteristics that describe it. Attributes can be things like names, addresses, or any other relevant information that is associated with the entity.
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Define primary keys: Identify the primary key for each entity. A primary key is a unique identifier that distinguishes each instance of an entity.
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Use cardinality and participation: Cardinality represents the number of instances of one entity that can be associated with another. Participation denotes whether the relationship between two entities is mandatory or optional.
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What is e-r model ii?
ER Model II (E-R Model II) is a form used to report certain information related to income tax in some countries.
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Individuals or entities who meet certain criteria set by the tax authorities are required to file E-R Model II.
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E-R Model II can be filled out either electronically through a designated portal or manually by filling out the form and submitting it to the tax authorities.
What is the purpose of e-r model ii?
The purpose of E-R Model II is to report specific financial information to the tax authorities for income tax purposes.
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E-R Model II typically requires information such as income sources, deductions, and tax credits.
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