Please give genuine thoughts and feedback for each analysis 

 

 

1. A partial dependency occurs when part of a candidate key is functionally dependent upon a non-prime attribute. Partial Dependency is eliminated with the second Normal Form. If a non-key attribute(s) depends on a part of a candidate key then it is partial dependency. 

It is applicable where the primary key has multiple attributes. If a non-key attribute(s) depends on the entire candidate key, then it is full dependency.  

According to the Second Normal Form standard, a full functional dependency is an example of database normalization. The primary key's performance is fully dependent on all non-key attributes, so this means it meets the First Normal Form (1NF) requirements. If an attribute Q is functionally dependent on another attribute P, it does not have to be functionally dependent on any of its correct subsets. 

An example of partial dependency is something like Student ID or student name. Where an example of full functional dependency is something like Employee ID, Days, and Project ID. Full functional dependency is important because it helps us to make sure that there is data integrity and can avoid data anomalies. 

 

 

 

2.  In database management, functional dependency is a crucial concept that determines the relationships between attributes in a relation. It refers to the extent to which a non-key attribute is dependent on a primary key attribute. When all non-key attributes are entirely dependent on the primary key, this is known as a full functional dependency. On the other hand, when non-key attributes are dependent on only a portion of the primary key, this is known as a partial dependency. 

Full functional dependency occurs when a non-key attribute is entirely dependent on the whole primary key, and it cannot be dependent on any other attribute(s) in the relation. In other words, the value of the non-key attribute is uniquely determined by the entire primary key, and it cannot change if any part of the primary key is altered. For example, consider a table that stores information about students, where the primary key is the student ID. The table may have attributes such as student name, address, and course. If the student name is entirely dependent on the student ID, and the student ID is unique, then this is an example of a full functional dependency.

Partial dependency, on the other hand, occurs when a non-key attribute is only dependent on a part of the primary key, and it can change if any other part of the primary key is altered. This means that a portion of the primary key is not enough to uniquely identify the non-key attribute. For instance, if in the above-mentioned table, the course attribute is dependent only on the department code portion of the primary key, and not on the entire student ID, then this is an example of a partial dependency. 

Can you give an example of a relation where there is both full functional dependency and partial dependency?