generated: '2026-08-12'
method: searched
source: https://docs.metamarkets.com/docs/glossary
note: >-
  Terms and definitions captured verbatim from the published Metamarkets
  Technical Documentation Glossary, which defines the vocabulary of the
  Metamarkets analytics platform and its Real-Time Data Ingestion (RDI) surface.
  Definitions are the provider's own words; nothing is added or interpreted.
name: Metamarkets Platform Vocabulary
docs: https://docs.metamarkets.com/docs/glossary
terms:
  - term: Backfill / Batch Clean Up
    definition: >-
      Adding missing data to a data set that has already been ingested by the
      Metamarkets Realtime Data Ingestion (RDI) platform.
  - term: Batch Files
    definition: >-
      The files containing the data being uploaded to the Metamarkets HTTP
      endpoints. Also called "data files" and log files.
  - term: Cardinality
    definition: >-
      Used to describe the degree to which dimensions aggregate in Druid.
      Dimensions with high cardinality will aggregate poorly, for example zip code.
  - term: Dashboard
    definition: >-
      The Metamarkets dashboard (or "dash") is a web-based analytics application
      used to view and query data in real time.
  - term: Data Ingestion
    definition: >-
      The process of taking in data that is being uploaded. Metamarkets Realtime
      Data Ingestion (RDI) is the platform that ingests data via an HTTP endpoint,
      processes it, and then surfaces data in the Metamarkets dashboard.
  - term: Dimension
    definition: >-
      A field containing values that are typically strings and are not aggregated
      (e.g., country codes). Dimensions with values that can be aggregated are
      usually treated as metrics.
  - term: Event
    definition: >-
      A record summarizing a transaction, such as results from an auction. Events
      are encapsulated as JSON objects.
  - term: HTTP endpoint
    definition: >-
      An interface with a URL for an address. The URL is used by the remote program
      to connect to the endpoint. The endpoints provided by Metamarkets require
      HTTPS (encrypted HTTP) to protect credentials and data.
  - term: Log Files
    definition: >-
      The files containing the data being uploaded to the Metamarkets HTTP
      endpoints. Also called "data files" and batch files.
  - term: Lookup Table
    definition: >-
      A file containing key-value mappings. Typically a code (the key) is mapped to
      a longer string of characters (the value). This allows senders to create more
      compact data since only the codes need to be provided. After the data is
      ingested, the lookup table is used to expand the data with the stored values.
  - term: Metric
    definition: >-
      A field containing values that can be aggregated, such as number of clicks or
      impressions served. Data metrics are contained in or inferred from raw data.
      Computed metrics are calculated after data is ingested and while it is being
      processed.
  - term: No Bid
    definition: >-
      A valid bid response (status of 1 in the bid response object) that contains an
      empty seat bid.
  - term: OpenRTB API Specification
    definition: >-
      The Open Real-Time Bidding API specification is the main standard on which the
      schema required for using the Metamarkets Realtime Data Ingestion (RDI) is based.
    reference: https://www.iab.com/guidelines/
  - term: Realtime Data Ingestion (RDI)
    definition: >-
      Realtime Data Ingestion is the Metamarkets data intake and processing platform.
      RDI is designed to ingest, process, and surface current data in seconds.
  - term: Record
    definition: >-
      An event that summarizes a single time-series data point, encapsulated in a
      JSON object. An auction record, for example, summarizes an RTB auction,
      including bids.
  - term: S3
    definition: >-
      Simple Storage Service is on-line file storage, part of Amazon Web Services.
      The root S3 storage partition is referred to as a bucket.
x-evidence:
  fetched: '2026-08-12'
  url: https://docs.metamarkets.com/docs/glossary.md
  http_status: 200