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datacontract.schema.json
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datacontract.schema.json
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{
"$schema": "http://json-schema.org/draft-07/schema#",
"type": "object",
"title": "DataContractSpecification",
"properties": {
"dataContractSpecification": {
"type": "string",
"title": "DataContractSpecificationVersion",
"enum": [
"1.1.0",
"0.9.3",
"0.9.2",
"0.9.1",
"0.9.0"
],
"description": "Specifies the Data Contract Specification being used."
},
"id": {
"type": "string",
"description": "Specifies the identifier of the data contract."
},
"info": {
"type": "object",
"properties": {
"title": {
"type": "string",
"description": "The title of the data contract."
},
"version": {
"type": "string",
"description": "The version of the data contract document (which is distinct from the Data Contract Specification version or the Data Product implementation version)."
},
"status": {
"type": "string",
"description": "The status of the data contract. Can be proposed, in development, active, retired.",
"examples": [
"proposed",
"in development",
"active",
"deprecated",
"retired"
]
},
"description": {
"type": "string",
"description": "A description of the data contract."
},
"owner": {
"type": "string",
"description": "The owner or team responsible for managing the data contract and providing the data."
},
"contact": {
"type": "object",
"properties": {
"name": {
"type": "string",
"description": "The identifying name of the contact person/organization."
},
"url": {
"type": "string",
"format": "uri",
"description": "The URL pointing to the contact information. This MUST be in the form of a URL."
},
"email": {
"type": "string",
"format": "email",
"description": "The email address of the contact person/organization. This MUST be in the form of an email address."
}
},
"description": "Contact information for the data contract.",
"additionalProperties": true
}
},
"additionalProperties": true,
"required": [
"title",
"version"
],
"description": "Metadata and life cycle information about the data contract."
},
"servers": {
"type": "object",
"description": "Information about the servers.",
"additionalProperties": {
"$ref": "#/$defs/BaseServer",
"allOf": [
{
"if": {
"properties": {
"type": {
"const": "bigquery"
}
}
},
"then": {
"$ref": "#/$defs/BigQueryServer"
}
},
{
"if": {
"properties": {
"type": {
"const": "postgres"
}
},
"required": [
"type"
]
},
"then": {
"$ref": "#/$defs/PostgresServer"
}
},
{
"if": {
"properties": {
"type": {
"const": "s3"
}
},
"required": [
"type"
]
},
"then": {
"$ref": "#/$defs/S3Server"
}
},
{
"if": {
"properties": {
"type": {
"const": "sftp"
}
},
"required": [
"type"
]
},
"then": {
"$ref": "#/$defs/SftpServer"
}
},
{
"if": {
"properties": {
"type": {
"const": "redshift"
}
},
"required": [
"type"
]
},
"then": {
"$ref": "#/$defs/RedshiftServer"
}
},
{
"if": {
"properties": {
"type": {
"const": "azure"
}
},
"required": [
"type"
]
},
"then": {
"$ref": "#/$defs/AzureServer"
}
},
{
"if": {
"properties": {
"type": {
"const": "sqlserver"
}
},
"required": [
"type"
]
},
"then": {
"$ref": "#/$defs/SqlserverServer"
}
},
{
"if": {
"properties": {
"type": {
"const": "snowflake"
}
},
"required": [
"type"
]
},
"then": {
"$ref": "#/$defs/SnowflakeServer"
}
},
{
"if": {
"properties": {
"type": {
"const": "databricks"
}
},
"required": [
"type"
]
},
"then": {
"$ref": "#/$defs/DatabricksServer"
}
},
{
"if": {
"properties": {
"type": {
"const": "dataframe"
}
},
"required": [
"type"
]
},
"then": {
"$ref": "#/$defs/DataframeServer"
}
},
{
"if": {
"properties": {
"type": {
"const": "glue"
}
},
"required": [
"type"
]
},
"then": {
"$ref": "#/$defs/GlueServer"
}
},
{
"if": {
"properties": {
"type": {
"const": "postgres"
}
},
"required": [
"type"
]
},
"then": {
"$ref": "#/$defs/PostgresServer"
}
},
{
"if": {
"properties": {
"type": {
"const": "oracle"
}
},
"required": [
"type"
]
},
"then": {
"$ref": "#/$defs/OracleServer"
}
},
{
"if": {
"properties": {
"type": {
"const": "kafka"
}
},
"required": [
"type"
]
},
"then": {
"$ref": "#/$defs/KafkaServer"
}
},
{
"if": {
"properties": {
"type": {
"const": "pubsub"
}
},
"required": [
"type"
]
},
"then": {
"$ref": "#/$defs/PubSubServer"
}
},
{
"if": {
"properties": {
"type": {
"const": "kinesis"
}
},
"required": [
"type"
]
},
"then": {
"$ref": "#/$defs/KinesisDataStreamsServer"
}
},
{
"if": {
"properties": {
"type": {
"const": "trino"
}
},
"required": [
"type"
]
},
"then": {
"$ref": "#/$defs/TrinoServer"
}
},
{
"if": {
"properties": {
"type": {
"const": "local"
}
},
"required": [
"type"
]
},
"then": {
"$ref": "#/$defs/LocalServer"
}
}
]
}
},
"terms": {
"type": "object",
"description": "The terms and conditions of the data contract.",
"properties": {
"usage": {
"type": "string",
"description": "The usage describes the way the data is expected to be used. Can contain business and technical information."
},
"limitations": {
"type": "string",
"description": "The limitations describe the restrictions on how the data can be used, can be technical or restrictions on what the data may not be used for."
},
"policies": {
"type": "array",
"items": {
"type": "object",
"properties": {
"type": {
"type": "string",
"description": "The type of the policy.",
"examples": [
"privacy",
"security",
"retention",
"compliance"
]
},
"description": {
"type": "string",
"description": "A description of the policy."
},
"url": {
"type": "string",
"format": "uri",
"description": "A URL to the policy document."
}
},
"additionalProperties": true
},
"description": "The limitations describe the restrictions on how the data can be used, can be technical or restrictions on what the data may not be used for."
},
"billing": {
"type": "string",
"description": "The billing describes the pricing model for using the data, such as whether it's free, having a monthly fee, or metered pay-per-use."
},
"noticePeriod": {
"type": "string",
"description": "The period of time that must be given by either party to terminate or modify a data usage agreement. Uses ISO-8601 period format, e.g., 'P3M' for a period of three months."
}
},
"additionalProperties": true
},
"models": {
"description": "Specifies the logical data model. Use the models name (e.g., the table name) as the key.",
"type": "object",
"minProperties": 1,
"propertyNames": {
"pattern": "^[a-zA-Z0-9_-]+$"
},
"additionalProperties": {
"type": "object",
"title": "Model",
"properties": {
"description": {
"type": "string"
},
"type": {
"description": "The type of the model. Examples: table, view, object. Default: table.",
"type": "string",
"title": "ModelType",
"default": "table",
"enum": [
"table",
"view",
"object"
]
},
"title": {
"type": "string",
"description": "An optional string providing a human readable name for the model. Especially useful if the model name is cryptic or contains abbreviations.",
"examples": [
"Purchase Orders",
"Air Shipments"
]
},
"fields": {
"description": "Specifies a field in the data model. Use the field name (e.g., the column name) as the key.",
"type": "object",
"additionalProperties": {
"type": "object",
"title": "Field",
"properties": {
"description": {
"type": "string",
"description": "An optional string describing the semantic of the data in this field."
},
"title": {
"type": "string",
"description": "An optional string providing a human readable name for the field. Especially useful if the field name is cryptic or contains abbreviations."
},
"type": {
"$ref": "#/$defs/FieldType"
},
"required": {
"type": "boolean",
"default": false,
"description": "An indication, if this field must contain a value and may not be null."
},
"fields": {
"description": "The nested fields (e.g. columns) of the object, record, or struct.",
"type": "object",
"additionalProperties": {
"$ref": "#/properties/models/additionalProperties/properties/fields/additionalProperties"
}
},
"items": {
"$ref": "#/properties/models/additionalProperties/properties/fields/additionalProperties"
},
"keys": {
"$ref": "#/properties/models/additionalProperties/properties/fields/additionalProperties"
},
"values": {
"$ref": "#/properties/models/additionalProperties/properties/fields/additionalProperties"
},
"primary": {
"type": "boolean",
"deprecationMessage": "Use the primaryKey field instead."
},
"primaryKey": {
"type": "boolean",
"default": false,
"description": "If this field is a primary key."
},
"references": {
"type": "string",
"description": "The reference to a field in another model. E.g. use 'orders.order_id' to reference the order_id field of the model orders. Think of defining a foreign key relationship.",
"examples": [
"orders.order_id",
"model.nested_field.field"
]
},
"unique": {
"type": "boolean",
"default": false,
"description": "An indication, if the value must be unique within the model."
},
"enum": {
"type": "array",
"items": {
"type": "string"
},
"uniqueItems": true,
"description": "A value must be equal to one of the elements in this array value. Only evaluated if the value is not null."
},
"minLength": {
"type": "integer",
"description": "A value must greater than, or equal to, the value of this. Only applies to string types."
},
"maxLength": {
"type": "integer",
"description": "A value must less than, or equal to, the value of this. Only applies to string types."
},
"format": {
"type": "string",
"description": "A specific format the value must comply with (e.g., 'email', 'uri', 'uuid').",
"examples": [
"email",
"uri",
"uuid"
]
},
"precision": {
"type": "number",
"examples": [
38
],
"description": "The maximum number of digits in a number. Only applies to numeric values. Defaults to 38."
},
"scale": {
"type": "number",
"examples": [
0
],
"description": "The maximum number of decimal places in a number. Only applies to numeric values. Defaults to 0."
},
"pattern": {
"type": "string",
"description": "A regular expression the value must match. Only applies to string types.",
"examples": [
"^[a-zA-Z0-9_-]+$"
]
},
"minimum": {
"type": "number",
"description": "A value of a number must greater than, or equal to, the value of this. Only evaluated if the value is not null. Only applies to numeric values."
},
"exclusiveMinimum": {
"type": "number",
"description": "A value of a number must greater than the value of this. Only evaluated if the value is not null. Only applies to numeric values."
},
"maximum": {
"type": "number",
"description": "A value of a number must less than, or equal to, the value of this. Only evaluated if the value is not null. Only applies to numeric values."
},
"exclusiveMaximum": {
"type": "number",
"description": "A value of a number must less than the value of this. Only evaluated if the value is not null. Only applies to numeric values."
},
"example": {
"type": "string",
"description": "An example value for this field.",
"deprecationMessage": "Use the examples field instead."
},
"examples": {
"type": "array",
"description": "A examples value for this field."
},
"pii": {
"type": "boolean",
"description": "An indication, if this field contains Personal Identifiable Information (PII)."
},
"classification": {
"type": "string",
"description": "The data class defining the sensitivity level for this field, according to the organization's classification scheme.",
"examples": [
"sensitive",
"restricted",
"internal",
"public"
]
},
"tags": {
"type": "array",
"items": {
"type": "string"
},
"description": "Custom metadata to provide additional context."
},
"links": {
"type": "object",
"description": "Links to external resources.",
"minProperties": 1,
"propertyNames": {
"pattern": "^[a-zA-Z0-9_-]+$"
},
"additionalProperties": {
"type": "string",
"title": "Link",
"description": "A URL to an external resource.",
"format": "uri",
"examples": [
"https://example.com"
]
}
},
"$ref": {
"type": "string",
"description": "A reference URI to a definition in the specification, internally or externally. Properties will be inherited from the definition."
},
"quality": {
"type": "array",
"items": {
"$ref": "#/$defs/Quality"
}
},
"lineage": {
"$ref": "#/$defs/Lineage"
},
"config": {
"type": "object",
"description": "Additional metadata for field configuration.",
"additionalProperties": {
"type": [
"string",
"number",
"boolean",
"object",
"array",
"null"
]
},
"properties": {
"avroType": {
"type": "string",
"description": "Specify the field type to use when exporting the data model to Apache Avro."
},
"avroLogicalType": {
"type": "string",
"description": "Specify the logical field type to use when exporting the data model to Apache Avro."
},
"bigqueryType": {
"type": "string",
"description": "Specify the physical column type that is used in a BigQuery table, e.g., `NUMERIC(5, 2)`."
},
"snowflakeType": {
"type": "string",
"description": "Specify the physical column type that is used in a Snowflake table, e.g., `TIMESTAMP_LTZ`."
},
"redshiftType": {
"type": "string",
"description": "Specify the physical column type that is used in a Redshift table, e.g., `SMALLINT`."
},
"sqlserverType": {
"type": "string",
"description": "Specify the physical column type that is used in a SQL Server table, e.g., `DATETIME2`."
},
"databricksType": {
"type": "string",
"description": "Specify the physical column type that is used in a Databricks Unity Catalog table."
},
"glueType": {
"type": "string",
"description": "Specify the physical column type that is used in an AWS Glue Data Catalog table."
}
}
}
}
}
},
"primaryKey": {
"type": "array",
"items": {
"type": "string"
},
"description": "The compound primary key of the model."
},
"examples": {
"type": "array"
},
"config": {
"type": "object",
"description": "Additional metadata for model configuration.",
"additionalProperties": {
"type": [
"string",
"number",
"boolean",
"object",
"array",
"null"
]
},
"properties": {
"avroNamespace": {
"type": "string",
"description": "The namespace to use when importing and exporting the data model from / to Apache Avro."
}
}
}
}
}
},
"definitions": {
"description": "Clear and concise explanations of syntax, semantic, and classification of business objects in a given domain.",
"type": "object",
"propertyNames": {
"pattern": "^[a-zA-Z0-9/_-]+$"
},
"additionalProperties": {
"type": "object",
"title": "Definition",
"properties": {
"domain": {
"type": "string",
"description": "The domain in which this definition is valid.",
"default": "global",
"deprecationMessage": "This field is deprecated. Encode the domain into the ID using slashes."
},
"name": {
"type": "string",
"description": "The technical name of this definition.",
"deprecationMessage": "This field is deprecated. Encode the name into the ID using slashes."
},
"title": {
"type": "string",
"description": "The business name of this definition."
},
"description": {
"type": "string",
"description": "Clear and concise explanations related to the domain."
},
"type": {
"$ref": "#/$defs/FieldType"
},
"fields": {
"description": "The nested fields (e.g. columns) of the object, record, or struct.",
"type": "object",
"additionalProperties": {
"$ref": "#/properties/models/additionalProperties/properties/fields/additionalProperties"
}
},
"items": {
"$ref": "#/properties/models/additionalProperties/properties/fields/additionalProperties"
},
"keys": {
"$ref": "#/properties/models/additionalProperties/properties/fields/additionalProperties"
},
"values": {
"$ref": "#/properties/models/additionalProperties/properties/fields/additionalProperties"
},
"minLength": {
"type": "integer",
"description": "A value must be greater than or equal to this value. Applies only to string types."
},
"maxLength": {
"type": "integer",
"description": "A value must be less than or equal to this value. Applies only to string types."
},
"format": {
"type": "string",
"description": "Specific format requirements for the value (e.g., 'email', 'uri', 'uuid')."
},
"precision": {
"type": "integer",
"examples": [
38
],
"description": "The maximum number of digits in a number. Only applies to numeric values. Defaults to 38."
},
"scale": {
"type": "integer",
"examples": [
0
],
"description": "The maximum number of decimal places in a number. Only applies to numeric values. Defaults to 0."
},
"pattern": {
"type": "string",
"description": "A regular expression pattern the value must match. Applies only to string types."
},
"minimum": {
"type": "number",
"description": "A value of a number must greater than, or equal to, the value of this. Only evaluated if the value is not null. Only applies to numeric values."
},
"exclusiveMinimum": {
"type": "number",
"description": "A value of a number must greater than the value of this. Only evaluated if the value is not null. Only applies to numeric values."
},
"maximum": {
"type": "number",
"description": "A value of a number must less than, or equal to, the value of this. Only evaluated if the value is not null. Only applies to numeric values."
},
"exclusiveMaximum": {
"type": "number",
"description": "A value of a number must less than the value of this. Only evaluated if the value is not null. Only applies to numeric values."
},
"example": {
"type": "string",
"description": "An example value.",
"deprecationMessage": "Use the examples field instead."
},
"examples": {
"type": "array",
"description": "Example value."
},
"pii": {
"type": "boolean",
"description": "Indicates if the field contains Personal Identifiable Information (PII)."
},
"classification": {
"type": "string",
"description": "The data class defining the sensitivity level for this field."
},
"tags": {
"type": "array",
"items": {
"type": "string"
},
"description": "Custom metadata to provide additional context."
},
"links": {
"type": "object",
"description": "Links to external resources.",
"minProperties": 1,
"propertyNames": {
"pattern": "^[a-zA-Z0-9_-]+$"
},
"additionalProperties": {
"type": "string",
"title": "Link",
"description": "A URL to an external resource.",
"format": "uri",
"examples": [
"https://example.com"
]
}
}
},
"required": [
"type"
]
}
},
"servicelevels": {
"type": "object",
"description": "Specifies the service level agreements for the provided data, including availability, data retention policies, latency requirements, data freshness, update frequency, support availability, and backup policies.",
"properties": {
"availability": {
"type": "object",
"description": "Availability refers to the promise or guarantee by the service provider about the uptime of the system that provides the data.",
"properties": {
"description": {
"type": "string",
"description": "An optional string describing the availability service level.",
"example": "The server is available during support hours"
},
"percentage": {
"type": "string",
"description": "An optional string describing the guaranteed uptime in percent (e.g., `99.9%`)",
"pattern": "^\\d+(\\.\\d+)?%$",
"example": "99.9%"
}
}
},
"retention": {
"type": "object",
"description": "Retention covers the period how long data will be available.",
"properties": {
"description": {
"type": "string",
"description": "An optional string describing the retention service level.",
"example": "Data is retained for one year."
},
"period": {
"type": "string",
"description": "An optional period of time, how long data is available. Supported formats: Simple duration (e.g., `1 year`, `30d`) and ISO 8601 duration (e.g, `P1Y`).",
"example": "P1Y"
},
"unlimited": {
"type": "boolean",
"description": "An optional indicator that data is kept forever.",
"example": false
},
"timestampField": {
"type": "string",
"description": "An optional reference to the field that contains the timestamp that the period refers to.",
"example": "orders.order_timestamp"
}
}
},
"latency": {
"type": "object",
"description": "Latency refers to the maximum amount of time from the source to its destination.",
"properties": {
"description": {
"type": "string",
"description": "An optional string describing the latency service level.",
"example": "Data is available within 25 hours after the order was placed."
},
"threshold": {
"type": "string",
"description": "An optional maximum duration between the source timestamp and the processed timestamp. Supported formats: Simple duration (e.g., `24 hours`, `5s`) and ISO 8601 duration (e.g, `PT24H`).",
"example": "25h"
},
"sourceTimestampField": {
"type": "string",
"description": "An optional reference to the field that contains the timestamp when the data was provided at the source.",
"example": "orders.order_timestamp"
},
"processedTimestampField": {
"type": "string",
"description": "An optional reference to the field that contains the processing timestamp, which denotes when the data is made available to consumers of this data contract.",
"example": "orders.processed_timestamp"
}
}
},
"freshness": {
"type": "object",
"description": "The maximum age of the youngest row in a table.",
"properties": {
"description": {
"type": "string",
"description": "An optional string describing the freshness service level.",
"example": "The age of the youngest row in a table is within 25 hours."
},
"threshold": {
"type": "string",
"description": "An optional maximum age of the youngest entry. Supported formats: Simple duration (e.g., `24 hours`, `5s`) and ISO 8601 duration (e.g., `PT24H`).",
"example": "25h"
},
"timestampField": {
"type": "string",
"description": "An optional reference to the field that contains the timestamp that the threshold refers to.",
"example": "orders.order_timestamp"
}
}
},
"frequency": {
"type": "object",
"description": "Frequency describes how often data is updated.",
"properties": {
"description": {
"type": "string",
"description": "An optional string describing the frequency service level.",
"example": "Data is delivered once a day."
},
"type": {
"type": "string",
"enum": [
"batch",
"micro-batching",
"streaming",
"manual"
],
"description": "The method of data processing.",
"example": "batch"
},
"interval": {
"type": "string",
"description": "Optional. Only for batch: How often the pipeline is triggered, e.g., `daily`.",
"example": "daily"
},
"cron": {
"type": "string",
"description": "Optional. Only for batch: A cron expression when the pipelines is triggered. E.g., `0 0 * * *`.",
"example": "0 0 * * *"
}
}
},
"support": {
"type": "object",
"description": "Support describes the times when support will be available for contact.",
"properties": {
"description": {
"type": "string",
"description": "An optional string describing the support service level.",
"example": "The data is available during typical business hours at headquarters."
},
"time": {
"type": "string",
"description": "An optional string describing the times when support will be available for contact such as `24/7` or `business hours only`.",
"example": "9am to 5pm in EST on business days"
},
"responseTime": {
"type": "string",
"description": "An optional string describing the time it takes for the support team to acknowledge a request. This does not mean the issue will be resolved immediately, but it assures users that their request has been received and will be dealt with.",
"example": "24 hours"
}
}
},
"backup": {
"type": "object",
"description": "Backup specifies details about data backup procedures.",
"properties": {