Identify at least two factors that should be considered in order to produce an optimal normalized set of tables when performing normalization.
Include in your discussion a detailed example on how each factor would eliminate data redundancy.
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Many legacy systems require normalization.
Departments Table:
| DepartmentID | DepartmentName | DepartmentManager |
| D01 | Sales | Bob |
| D02 | IT | Carol |
By splitting the data, the department information is stored only once in the Departments table, eliminating the redundancy and ensuring that a change to the department manager's name only requires an update to a single record.
Sample Answer
Two critical factors for producing an optimal normalized set of tables are eliminating transitive dependencies and eliminating partial dependencies. These factors are key to ensuring data integrity and efficiency by removing redundant data.
Eliminating Partial Dependencies
Partial dependencies occur when a non-key attribute is dependent on only part of a composite primary key. Removing them is a core step in moving from First Normal Form (1NF) to Second Normal Form (2NF). This process isolates attributes that are not fully dependent on the primary key, placing them into a new, separate table.
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