Dama DMF-1220 Exam Questions
Data Management Fundamentals (Page 8 )

Updated On: 16-Feb-2026

The number of entities in a relationship is the arity of the relationship. The most common are:

  1. Unary
  2. Binary
  3. Trinary
  4. Ternary

Answer(s): A,B,D



What type of key is used in physical and sometimes logical relational data modelling schemes to represent a relationship?

  1. Primary key
  2. Foreign key
  3. Network key
  4. Applications key
  5. Door key
  6. All of the above

Answer(s): B



Please select valid modelling schemes or notations

  1. NoSQL
  2. Dimensional
  3. Relational
  4. Object-orientated
  5. Fact-based
  6. Matrix-based

Answer(s): A,B,C,D,E



Domains can be identified in different ways including: data type; data format; list; range; and rule- based.

  1. TRUE
  2. FALSE

Answer(s): A



Snowflaking is the term given to normalizing the flat, single-table, dimensional structure in a star schema into the respective component hierarchical or network structures.

  1. TRUE
  2. FALSE

Answer(s): A






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