Primary keys come from candidate keys. Each candidate key consists of the attribute or attributes used to label a distinct row in a table. Every candidate key should contain the fewest number of ...

CA-DATACOM/DB is a database management system (DBMS). Databases are fully defined with CA-DATADICTIONARY. A CA-DATACOM/DB database consists of various entity-types, which can occur one or more times.

In this lab, I designed an Employee database schema using Enhanced Entity-Relationship (EER) diagrams. This project involved creating essential entities such as Employee, Department, Dept_Emp, ...

Abstract: The semantics of concept hierarchy can show mapping hierarchy relations among attributes in Database System. The Formal Concept Analysis (FCA) is a mathematical tool for analysis based on ...