Entities & Attributes Overview By the end of this section participants will be able to discuss the main components of Section 5, and be able to incorporate section 5 into the practice record at the end of the Workshop.

Metadata describes Metadata is information about data Metadata describes the characteristics of the data –How it was produced –Data Sources –The currentness of the data –The spatial parameters of the data set –Accuracy of the lines –Plus much more

Section 5 is the component of metadata which describes the data table. Environmental Sensitivity Index Data RARNUM - unique combination of species, concentration, and seasonality CONC (concentration) = Density species is found at location Season_ID = seasonality code like to the seasonal table Element - Biology group Metadata

Entity and Attribute Section Detailed_Description: Entity_Type: Entity_Type_Label: Population Entity_Type_Definition: U.S. Population in 1,000 aggregated by census geography and year. Entity_Type_Definition_Source: NOS, Special Projects Attribute: Attribute_Label: c_popul Attribute_Definition: Total Population (Units: persons) Attribute_Definition_Source: NOS, Special Projects Attribute_Domain_Values: Unrepresentable_Domain: Variable by location and year Attribute: Attribute_Label: c_urbn Attribute_Definition: Urban Population (Units: persons) Attribute_Definition_Source: NOS, Special Projects Attribute_Domain_Values: Unrepresentable_Domain: Variable by location and year

Overview Description Dataset covers the following general areas, population, age, structures, income distributions, employment, educational attainment, and residential mobility aggregated by geographic area.

Detailed Description Detailed_Description: Entity_Type: Entity_Type_Label: Population Entity_Type_Definition: U.S. Population in 1,000s aggregated by census geography and year. Entity_Type_Definition_Source: NOS, Special Projects Attribute: Attribute_Label: c_popul Attribute_Definition: Total Population (Units: persons) Attribute_Definition_Source: NOS, Special Projects Attribute_Domain_Values: Unrepresentable_Domain: Variable by location and year Attribute: Attribute_Label: c_urbn Attribute_Definition: Urban Population (Units: persons) Attribute_Definition_Source: NOS, Special Projects Attribute_Domain_Values: Unrepresentable_Domain: Variable by location and year

Definitions Entity - the definition and description of a set into which similar entity instances are classified. Attribute - a defined characteristic of an entity.

Deciding the Entities and Attributes Entity Road Table Attribute Road Location Road Type Length Breakdown

Deciding the Entities and Attributes Entity Road Location Road Type Length Attribute of Road Type Breakdown

Entity Type Entity Type Label: c_popul Entity Type Definition: Total Population (Units: persons) Entity Type Definition Source: NOAA Required Fields

Attribute Attribute Label: c_popul Attribute Definition: Total Population (Units: persons) Attribute Definition Source: NOAA Attribute Domain Values: Range Domain: Range Domain Minimum: 1000 Range Domain Maximum: Required Fields

Enumerated Domain – A fixed list of values Attribute Domain Value: Enumerated Domain: Enumerated Domain Value: 1 Enumerated Domain Value Definition: Bike Trail Enumerated Domain Value Definition Source: Test Company

Codeset Domain – Standardized List of Values Attribute Domain Value: Codeset Name: Federal Information Processing Standards Codes Codeset Source: National Institute of Standards and Technology

Range Domain – A series of measurements where you would provide the minimum and maximum values Attribute Domain Value: Range Domain: Range Domain Minimum: 0.5 Range Domain Maximum: 3

Unrepresentable Domain – Unique values such as names which cannot be easily summarized Attribute Domain Value: Unrepresentable Name: Unique Values, Road Names

Additional Things to Think About - Definitions Entity Type Entity Type Label: YEAR Entity Type Definition: year Entity Type Definition Source: NOAA Entity Type Entity Type Label: YEAR Entity Type Definition: Fiscal year Entity Type Definition Source: NOAA

Additional Things to Think About - Units Attribute Attribute Label: Depth Attribute Definition: Water Depth Attribute Definition Source: NOAA Attribute Domain Values: Range Domain: Range Domain Minimum: 0.5 Range Domain Maximum: 3

Additional Things to Think About - Completeness Attribute Attribute Label: 2013 Attribute Definition: S Attribute Definition Source: NOAA Attribute Domain Values: Unrepresentable Domain: Fixed Value

Additional Things to Think About - Labels Attribute Attribute Label: Anthrax Attribute Definition: Anthracene Attribute Definition Source: NOAA Attribute Domain Values: Unrepresentable Domain: Fixed Value

Finally... Remember, dataset definitions are an important part of ensuring long-term data integrity. Provide complete definitions that are understood by others outside of the project and when appropriate the units of measure.

Have someone else read it. If you’re the only reviewer, put it away and read it again later. Check for clarity and omissions. Review your final product. Writing Metadata

Does the documentation present all the information needed to use or reuse the data? Are any pieces missing? When you review your work, ask: Writing Metadata

5. Entity_and_Attribute_Information: (p. 75) Database design entities, attributes, domains, description of data values