Database Design and Development Data Dictionary

Learning Intention I will learn about data dictionaries.

Data Dictionaries We already know how to graphically show the relationship between two or more entities how to identify primary and foreign keys the available attribute types that we set the size of an attribute the 4 types of validation we can add to an attribute: range check, presence check, field length and restricted choice

Data Dictionaries A data dictionary is used to indicate the properties of each attribute we need to define the entities in a database. Data dictionaries contain the following: name of each entity name of all attributes for each entity type of data held by each attribute size of each attribute which attributes and primary and foreign keys validation rules to be applied to each attribute

Pupil Task Complete the Data Dictionaries Task sheet on your computer.

Success Criteria I can describe and exemplify a data dictionary to design a database.