MySQL, an open-source DBMS widely used by many businesses, provides a freely available and widely adopted solution. There's also Oracle, which is recognized as a powerhouse in the corporate world because of its robustness and advanced security features. ...
Entity Relationship Diagram (ER Diagram or ERD) is a pictorial or visual representation of classifying groups or entities of common interest and defining the relationship between these groups. Hence, a structure is created with various symbols of different shapes and sizes so that it can be used ...
Functional Dependency Types: Partial Functional dependency Transitive Dependency Partial Functional Dependency: • Attribute Q is partially dependent on attribute P, if and only if it is dependent on the subset of attribute P. • REPORT (Student#, Course#, StudentName, CourseName, Marks, Grade)...
“A relation is in third normal form if there is no transitive dependency for non-prime attributes (and is also in the second form…)” Here’s the important part: no transitive dependency for non-prime attributes. Also, in a 3NF-compliant table, no non-primary key attribute has transitive...
Let R be a relation. Let r, the relation state, denote the set of tuples that are currently present in the relation R. The Functional Dependency FD between two groups of attributes X-> Y denotes x and Y from the relation R. The set of attributes Y are functionally dependent on the ...
This isPartial Dependency, where an attribute in a table depends on only a part of the primary key and not on the whole key. How to remove Partial Dependency? There can be many different solutions for this, but out objective is to remove teacher's name from Score table. ...