Can a schema be specified on the command line?
When you specify the schema on the command line, you cannot include a RECORD ( STRUCT ) type, you cannot include a column description, and you cannot specify the column’s mode. All modes default to NULLABLE. To include descriptions, modes, and RECORD types, supply a JSON schema file instead.
What’s the default way to create entity schemas?
The default method is “convention”. It uses built in rules based on the name of properties, and entity composition to create the schema. It’s the method most people use to get started, but you don’t have any control over them. Another way to configure the schema is to use annotations on the entity model to dictate how the schema is created.
What do you need to know about schema composition?
Basics of schema composition: An overview of XDM schemas and their building blocks, including classes, schema field groups, data types, and individual fields. Real-time Customer Profile: Provides a unified, real-time consumer profile based on aggregated data from multiple sources.
How to specify a table schema using the API?
To specify a table schema using the API: To specify a schema when you load data, call the jobs.insert method and configure the schema property in the load job configuration. To specify a schema when you create a table, call the tables.insert method and configure the schema property in the table resource.
Which is an example of a valid component name?
Examples of valid names: The component names are used to reference the components via $ref from other parts of the API specification: An exception are definitions in securitySchemes which are referenced directly by name (see Authentication ). Below is an example of components that contains reusable data schemas, parameters and responses.
How to single source components in a spec?
Think of the components object like a document appendix where the re-usable details are provided. If multiple parts of your spec have the same schema, you point each of these references to the same object in your components object, and in so doing you single source the content.
What should be included in a JSON schema file?
A JSON schema file consists of a JSON array that contains the following: 1 (Optional) The column’s description 2 The column name 3 The column’s data type 4 (Optional) The column’s mode (if unspecified, mode defaults to NULLABLE) More