Columns in an externally-defined schema table must contain specific column names such as FeatureType, AttributeName, and AttrDataType.

Columns in an externally-defined schema table must contain specific column names such as FeatureType, AttributeName, and AttrDataType.

• A. True
• B. False
• C. Only in Excel-based schemas
• D. Depends on the reader format

Answer: (B)

The idea being tested is that an externally-defined schema table is about the information content—feature type, attribute name, and data type—rather than fixed header text. You need to convey which feature type an attribute belongs to, the name of the attribute, and its data type, but the exact column labels are not universally fixed. Different data sources and schema formats can name those columns differently, and you can map or rename them as needed so the translator understands the intended meaning. So, even if a schema file uses headers like Type, Name, and DataType (instead of FeatureType, AttributeName, and AttrDataType), it can still be valid as long as the mapping expresses the same information. That’s why the statement is not universally true.

The idea being tested is that an externally-defined schema table is about the information content—feature type, attribute name, and data type—rather than fixed header text. You need to convey which feature type an attribute belongs to, the name of the attribute, and its data type, but the exact column labels are not universally fixed. Different data sources and schema formats can name those columns differently, and you can map or rename them as needed so the translator understands the intended meaning. So, even if a schema file uses headers like Type, Name, and DataType (instead of FeatureType, AttributeName, and AttrDataType), it can still be valid as long as the mapping expresses the same information. That’s why the statement is not universally true.