ER Diagram - Normalization - Partial Dependency - Computer Assignment Help

Assignment Task :

National strata maintain a shift roster and strata manager consults roster to assign staff members to attend calls. A staff member can be assigned to work on only one shift per day but each shift will have multiple staff members. The company needs to organize meetings for its clients, for this they must maintain a list of clients along with their names, property details, contact details. They must also collect payments from clients for services provided on a quarterly basis. A list of defaulters is maintained so penalties may be applied as per the by-laws. Company also needs to maintain a list of expenses they incur for each property so accounts can be audited quarterly.

Task 1 ER Diagram

• Identify the entities, relationships, participation and cardinality from the above case study. Use UPPERCASE to name your entities and use Capitalisation (of first letter) to name attributes of entities. Underline all primary key attributes and mention all the foreign key attributes. Specify relationship verb.

• Resolve many to many relationships.

• State your assumptions clearly.

• Create an ER diagram using crow's foot notation in any tool of your choice. Hand drawn diagrams will not be accepted. 
 

Task 2 Normalization

• List all the dependencies in a dependency diagram including partial and transitive.

• Show the determinants and select primary key, foreign key.

• Starting with unnormalized data, convert all the tables to 1 NF. Clearly outline the rules for a table to be in 1 NF and provide justification.

• Identify partial dependency if any and resolve it.

• Identify transitive dependency if any and resolve it.

• Make sure the tables are in BCNF. Explain the rule with tables as example.

• Identify multivalued dependency if any and resolve it.

• At each stage list the rules and provide explanation of why the tables are in 2, 3 or 4 NF. 

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