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5CCS02DB Database Systems Lecturer: Sophia Asoka Teaching Assistants: Gianni Santos, Christos Hadjinikolis December 2, 2013 9th Tutorial Part I Functional Dependencies You are given the following
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How to fill out part i functional dependencies
How to fill out part i functional dependencies:
01
Identify the attributes: Begin by listing all the attributes within the given relation or database schema. These attributes can be thought of as the columns in a table or the properties of an entity.
02
Determine the functional dependencies: Analyze the relationships between the attributes to determine the functional dependencies. A functional dependency exists when the value of one attribute uniquely determines the value of another attribute.
03
Write the functional dependencies: Write out the functional dependencies in the form of X → Y, where X is the determinant attribute(s) and Y is the dependent attribute(s). This notation indicates that for each unique value of X, there is a corresponding unique value of Y.
04
Verify the dependencies: Check the functional dependencies for correctness and completeness. Ensure that all dependencies are accurately represented and that there are no unnecessary or redundant dependencies.
Who needs part i functional dependencies:
01
Database administrators: Database administrators are responsible for designing and maintaining databases. They need functional dependencies to properly structure the database schema and ensure data integrity. By understanding the dependencies, they can make informed decisions about table design, normalization, and indexing.
02
Data analysts: Data analysts often work with large datasets and need to understand the relationships between data attributes. They use functional dependencies to identify key attributes, determine data redundancy, and improve data quality. This knowledge helps them in performing data analysis and generating meaningful insights.
03
Software developers: Software developers use functional dependencies to build efficient and optimized database systems. By understanding the dependencies, they can design queries and optimize data retrieval and manipulation operations. This knowledge also helps them in ensuring data consistency and accuracy within their applications.
In conclusion, anyone involved in database design, data analysis, or software development can benefit from understanding and utilizing part i functional dependencies. It helps in organizing data, improving performance, and ensuring data integrity.
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What is part i functional dependencies?
Part I functional dependencies refer to the relationships between attributes in a relational database table, indicating how one attribute is functionally dependent on another attribute.
Who is required to file part i functional dependencies?
Database administrators or data analysts are typically responsible for filing part I functional dependencies.
How to fill out part i functional dependencies?
Part I functional dependencies can be filled out by analyzing the data attributes in a database table and determining the relationships between them.
What is the purpose of part i functional dependencies?
The purpose of part I functional dependencies is to ensure data integrity and reduce redundancy in a database.
What information must be reported on part i functional dependencies?
Part I functional dependencies must report the relationships between attributes in a database table.
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