data warehouse

[¦dad·ə ′wer‚hau̇s] (computer science) A large specialized database, holding perhaps hundreds of terabytes of data. A database specifically structured for information access and reporting.

data warehouse

(database)(Or corporate data warehouse, CDW) Any system forstoring, retrieving and managing large amounts of data. Datawarehouse software often includes sophisticated compressionand hashing techniques for fast searches, as well asadvanced filtering. A data warehouse is often a relational database containing a recent snapshot of corporate data andoptimised for searching. Planners and researchers can usethis database without worrying about slowing down day-to-dayoperations of the production database. The latter can beoptimised for transaction processing (inserts and updates).

Compare data mart.

data warehouse

A database designed to support decision making in an organization. Data from the production databases are copied to the data warehouse so that queries can be performed without disturbing the performance or the stability of the production systems.

Data Marts
Data warehouses can become enormous with hundreds of gigabytes of transactions. As a result, subsets, known as "data marts," are often created for just one department or product line.

Updated at the End of a Period
Data warehouses are generally batch updated at the end of the day, week or some period. Its contents are typically historical and static and may also contain numerous summaries.

Operational Data Stores
The data warehouse is structured to support a variety of analyses, including elaborate queries on large amounts of data that can require extensive searching. When databases are set up for queries on daily transactions, they are often called "operational data stores" rather than data warehouses (see ODS). See OLAP, decision support system, EIS and BI software.

单词	data warehouse
释义	data warehouse data warehouse [¦dad·ə ′wer‚hau̇s] (computer science) A large specialized database, holding perhaps hundreds of terabytes of data. A database specifically structured for information access and reporting. data warehouse (database)(Or corporate data warehouse, CDW) Any system forstoring, retrieving and managing large amounts of data. Datawarehouse software often includes sophisticated compressionand hashing techniques for fast searches, as well asadvanced filtering. A data warehouse is often a relational database containing a recent snapshot of corporate data andoptimised for searching. Planners and researchers can usethis database without worrying about slowing down day-to-dayoperations of the production database. The latter can beoptimised for transaction processing (inserts and updates). Compare data mart. data warehouse A database designed to support decision making in an organization. Data from the production databases are copied to the data warehouse so that queries can be performed without disturbing the performance or the stability of the production systems. Data Marts Data warehouses can become enormous with hundreds of gigabytes of transactions. As a result, subsets, known as "data marts," are often created for just one department or product line. Updated at the End of a Period Data warehouses are generally batch updated at the end of the day, week or some period. Its contents are typically historical and static and may also contain numerous summaries. Operational Data Stores The data warehouse is structured to support a variety of analyses, including elaborate queries on large amounts of data that can require extensive searching. When databases are set up for queries on daily transactions, they are often called "operational data stores" rather than data warehouses (see ODS). See OLAP, decision support system, EIS and BI software. data warehouse data warehouse A central repository for the data collected by the various computer systems of an enterprise. LegalSeeWarehouseFinancialSeedecision support systemSee DW See DISA WESTHEMThesaurusSeedata mining
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