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SIT 455 Functional Dependency Practice 1. Consider the following table: SSN surname college pub×PRI state governor athleticconf ncaacategory Suppose we have the following dependencies specified by
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How to fill out csit 455 functional dependency
How to fill out csit 455 functional dependency:
01
Identify the attributes: Start by identifying all the attributes in the given set of data. These attributes can be columns in a table or variables in a dataset.
02
Determine the functional dependencies: Analyze the relationships between the attributes to identify the functional dependencies. A functional dependency occurs when the value of one attribute determines the value of another attribute.
03
Create the dependency diagram: Represent the functional dependencies using a dependency diagram. This diagram visualizes the relationships between the attributes and helps in understanding the dependencies more clearly.
04
Calculate the closure: Determine the closure of each attribute by calculating the set of attributes that can be functionally determined by it. This step helps in identifying the candidate keys and superkeys present in the dataset.
05
Normalize the data: Based on the information obtained from the previous steps, normalize the data to a higher normal form. This helps in reducing data redundancy and anomalies.
06
Document the functional dependencies: Finally, document all the identified functional dependencies and the steps taken to fill out the csit 455 functional dependency.
Who needs csit 455 functional dependency:
01
Database Designers: Database designers need functional dependency knowledge to properly design and structure databases. Functional dependencies help in organizing data efficiently and avoiding data integrity issues.
02
Data Analysts: Data analysts use functional dependencies to analyze and understand the relationships between different attributes in a dataset. This information helps in data profiling, data quality assessment, and data modeling.
03
Database Administrators: Database administrators utilize functional dependency concepts to optimize database performance. By understanding the dependencies, they can make informed decisions on indexing, query optimization, and data storage strategies.
04
Students and Researchers: Students studying computer science or database management need to learn about functional dependencies as part of their curriculum. Researchers in the field of database management and information systems also study and explore functional dependency concepts for their research work.
05
Software Developers: Software developers working on database-driven applications need to understand functional dependencies to ensure data integrity and consistency in their software systems. They need to design and implement database schemas considering the functional dependencies.
In conclusion, anyone involved in database design, analysis, administration, education, or software development can benefit from understanding and using csit 455 functional dependency.
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