"data mart" meaning in English

{
  "etymology_text": "Following the metaphor of a data warehouse.",
  "forms": [
    {
      "form": "data marts",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "datamart",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "data mart (plural data marts)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2002 [1991], W. H. Inmon, Building the Data Warehouse, 3rd edition, John Wiley & Sons, →ISBN, page 142:",
          "text": "One of the issues of data warehouses and data marts is how data gets from the data warehouse to the data mart. Data in the data warehouse is very granular. Data in the data mart is very compact and summarized.",
          "type": "quote"
        }
      ],
      "glosses": [
        "The access layer of a data warehouse environment, used to distribute a subset of the data to users."
      ],
      "id": "en-data_mart-en-noun-uuNbv7--",
      "links": [
        [
          "access",
          "access"
        ],
        [
          "layer",
          "layer"
        ],
        [
          "data warehouse",
          "data warehouse"
        ],
        [
          "environment",
          "environment"
        ],
        [
          "distribute",
          "distribute"
        ],
        [
          "user",
          "user"
        ]
      ],
      "related": [
        {
          "word": "spreadmart"
        }
      ],
      "wikipedia": [
        "data mart"
      ]
    }
  ],
  "word": "data mart"
}

{
  "etymology_text": "Following the metaphor of a data warehouse.",
  "forms": [
    {
      "form": "data marts",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "datamart",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "data mart (plural data marts)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "spreadmart"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "2002 [1991], W. H. Inmon, Building the Data Warehouse, 3rd edition, John Wiley & Sons, →ISBN, page 142:",
          "text": "One of the issues of data warehouses and data marts is how data gets from the data warehouse to the data mart. Data in the data warehouse is very granular. Data in the data mart is very compact and summarized.",
          "type": "quote"
        }
      ],
      "glosses": [
        "The access layer of a data warehouse environment, used to distribute a subset of the data to users."
      ],
      "links": [
        [
          "access",
          "access"
        ],
        [
          "layer",
          "layer"
        ],
        [
          "data warehouse",
          "data warehouse"
        ],
        [
          "environment",
          "environment"
        ],
        [
          "distribute",
          "distribute"
        ],
        [
          "user",
          "user"
        ]
      ],
      "wikipedia": [
        "data mart"
      ]
    }
  ],
  "word": "data mart"
}