First (1st) Normal Form A table or relation is said to be in first normal form (1NF) only when every attribute or column has only atomic data in them, which is every single attributes or column can have only one (1) data for every single tuple or row in the relation or table. Relational database tables, like the Sales table...

Hello, this is Laura Lee Rose – author of the business and time management books TimePeace: Making peace with time – the The Book of Answers: 105 Career Critical Situations – and I am a business and efficiency coach that specializes in time management, project management and work-life balance strategies. A busy professional asks a question regarding employer/employee relationships. How...

Notion of Multi Valued Dependency (MVD) The multi valued dependency (MVD) X → Y is supposed to hold for a table or relation R ( X, Y, Z ) if for a given group of data (group of data when X is having more than one (1) column or attribute) for columns or attributes X, there is a group of...

Multi – Valued Dependencies The multi valued dependency arises when more than one (1) multi valued attributes or columns are existing. Think through the subsequent relation or table which signifies an object EMPLOYEE which has one (1) multi valued column or attribute named as “Projects”. EMPLOYEE ( Emp_ID, Department, Projects, Salary) To this point of time the data or the...

Relational Database Management System (RDBMS) and Normalization Forms – Part – 4 Irreducible Sets of Dependencies Let’s assume S 1 as well as S 2 be two (2) sets of practical dependencies if every single practical dependencies inferred by means of S 1 is inferred through S 2 which is when S 1 + is a subclass of S 2...