schema

What is schema

As an alias of tableset

• In the world of databases (refer to Oracle, Teradata, Postgres), schema is the namespace where a collection of objects are created (tables, views, indexes etc).
• The schema is being used as select * from schema_name.table_name;

In the world of data in general, schema is the definition of the data.

• If we store the data in a table then the schema is the structure of the table (columns, data types, indexes etc).
• For events or API return results, schema speaks about fields and types.
• For files, schema is about headers, delimiters.

Data definition

https://schema.org/

• A universal naming standard of objects' fields/members/properties
• issues are tracked on GitHub.

https://json-schema.org/

• 《Understanding JSON Schema》中文译本

Wiki: schema in data warehouse