Why is it important for data from various sources to be defined in a standardized or uniform way

Choose ONE of the question sets below to research and post a thorough answer to the questions.

1. Why is it important for data from various sources to be defined in a standardized or uniform way? How do a data set and core data elements make it possible to standardized data in healthcare organizations?
2. What is the reason for creating a unique identification number for every healthcare consumer? What could be some issues caused if this is not done?
3. What is a data dictionary? What is its importance in ensuring data quality? What type of information would be listed in a data dictionary?
4. What is data integrity? How is data integrity different from data security?