Data Dictionary Concepts and Practices

The video tutorial covers the essential components of a data dictionary, including field, data type, size, and description. It emphasizes the importance of using single-word field names without spaces and discusses typical fields like card ID and balance. The tutorial also addresses the ethical considerations of including sensitive information, such as bank account numbers, in a data dictionary. Additionally, it highlights the significance of understanding different data types, including boolean, and ensuring accurate field descriptions.

What are the four main headings in a data dictionary?

• Field, Data Type, Example, Description

• Field, Data Type, Size, Description

• Field, Data Type, Size, Example

• Field, Example, Size, Description

Why should field names in a data dictionary be single words without spaces?

• To ensure compatibility with databases

• To save space in the dictionary

• To avoid confusion with other fields

• To make them easier to read

What is the primary reason for not including spaces in field names?

• To improve readability

• To ensure database compatibility

• To reduce file size

• To enhance security

Which of the following is a typical field that should be included in a data dictionary?

• Home Address

• Social Security Number

• Card ID

• Bank Account Number

Why is it not advisable to include a bank account number on a card?

• It is difficult to update

• It takes up too much space

• It poses a security risk

• It is not relevant information

What crucial piece of information can be used to provide discounts?

• Card ID

• Cardholder's name

• Weekly journeys

• Balance

What is the significance of including weekly journeys in a data dictionary?

• To monitor balance

• To provide discounts

• To track card usage

• To update card information

What is a boolean data type used for?

• Storing date values

• Storing true/false values

• Storing numerical values

• Storing text values

Which data type is useful for representing yes/no or true/false values?

• Float

• Boolean

• String

• Integer

What should be considered when describing fields in a data dictionary?

• The color of the text

• The relevance of the field

• The length of the description

• The font size