generated: '2026-07-22'
method: derived
source: openapi/ path hierarchies + graphql/deutsche-boerse-eurex-t7-reference-data.graphql
notes: A7 REST resources are navigated hierarchically by path (market -> date -> segment
  -> security -> message) rather than by embedded id references; the Eurex GraphQL
  schema models the product/contract level of the same T7 reference data.
entities:
- name: Market
  description: T7 trading venue (e.g. XEUR Eurex, XETR Xetra)
  source: openapi/deutsche-boerse-reference-data-api-api-openapi.yml#getMarkets
- name: MarketSegment
  description: Product/market segment within a venue on a trading day
  source: openapi/deutsche-boerse-reference-data-api-api-openapi.yml#getMarketSegments
- name: Security
  description: Tradable instrument within a market segment
  source: openapi/deutsche-boerse-reference-data-api-api-openapi.yml#getSecurities
- name: OrderBook
  description: Constructed order book state for a security
  source: openapi/deutsche-boerse-order-book-api-api-openapi.yml#getOrderbookT7
- name: EobiMessage
  description: Raw EOBI order-by-order message keyed by transactTime/applSeqNum/msgSeqNum
  source: openapi/deutsche-boerse-market-data-api-eobi-api-openapi.yml#getMessageDetails
- name: MdpPacket
  description: CME MDP packet keyed by sendingTime for an exchange/asset/security
  source: openapi/deutsche-boerse-sending-times-packets-messages-api-openapi.yml#getPacketDetails
- name: Algo
  description: Customer-owned algorithm run over historical data
  source: openapi/deutsche-boerse-algo-management-api-api-openapi.yml#getAlgos
- name: PrecalcJob
  description: Precalculated analytics job with dated tasks and result sets
  source: openapi/deutsche-boerse-precalc-api-api-openapi.yml#getPrecalcJobs
- name: Dataset
  description: Customer or provider dataset stored on A7
  source: openapi/deutsche-boerse-dataset-api-api-openapi.yml#getAvailableDatasets
- name: Auction
  description: Simulated Xetra auction result for a security and auction type
  source: openapi/deutsche-boerse-auctions-api-openapi.yml#getAuction
- name: Product
  description: Eurex product (GraphQL ProductInfos)
  source: graphql/deutsche-boerse-eurex-t7-reference-data.graphql
- name: Contract
  description: Eurex contract/expiration (GraphQL Contracts)
  source: graphql/deutsche-boerse-eurex-t7-reference-data.graphql
relationships:
- from: Market
  to: MarketSegment
  type: has_many
  via: path /rdi/{marketId}/{date}/
- from: MarketSegment
  to: Security
  type: has_many
  via: path /rdi/{marketId}/{date}/{marketSegmentId}/
- from: Security
  to: OrderBook
  type: has_one
  via: path /ob/{marketId}/{date}/{marketSegmentId}/{securityId}
- from: Security
  to: EobiMessage
  type: has_many
  via: path /eobi/.../{securityId}/{transactTime}/{applSeqNum}/{msgSeqNum}
- from: Security
  to: MdpPacket
  type: has_many
  via: path /mdp/{exchange}/{date}/{asset}/{securityId}/{sendingTime}
- from: Security
  to: Auction
  type: has_many
  via: path /auction/{exchange}/{date}/{marketSegmentID}/{securityID}/{auctionType}
- from: Algo
  to: PrecalcJob
  type: has_many
  via: precalc runs execute algos over dated tasks
- from: PrecalcJob
  to: Dataset
  type: has_many
  via: path /precalc/{owner}/{precalc}/{date}/{task}/{result}
- from: Product
  to: Contract
  type: has_many
  via: 'GraphQL Contracts(product: ...)'
- from: Product
  to: MarketSegment
  type: has_one
  via: Eurex product == T7 market segment (cross-surface)